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<link:linkbase xmlns:link='http://www.xbrl.org/2003/linkbase' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd'>
<link:labelLink xlink:role='http://www.xbrl.org/2003/role/link' xlink:type='extended' xmlns:xlink='http://www.w3.org/1999/xlink'>
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AccountingChangesDiscussion' xlink:label='loc_AccountingChangesDiscussion' xlink:type='locator' />
<link:label id='lab_AccountingChangesDiscussion_label_en-US' xlink:label='lab_AccountingChangesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Accounting Changes Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AccountingChangesDiscussion' xlink:to='lab_AccountingChangesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AcquisitionOfOwnStockDiscussion' xlink:label='loc_AcquisitionOfOwnStockDiscussion' xlink:type='locator' />
<link:label id='lab_AcquisitionOfOwnStockDiscussion_label_en-US' xlink:label='lab_AcquisitionOfOwnStockDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Acquisition of Own Stock Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AcquisitionOfOwnStockDiscussion' xlink:to='lab_AcquisitionOfOwnStockDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:label='loc_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:type='locator' />
<link:label id='lab_AdditionalFactorsThatMayAffectFutureResultsDiscussion_label_en-US' xlink:label='lab_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Additional Factors that May Affect Future Results Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:to='lab_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AllowanceForLoanLossesDiscussion' xlink:label='loc_AllowanceForLoanLossesDiscussion' xlink:type='locator' />
<link:label id='lab_AllowanceForLoanLossesDiscussion_label_en-US' xlink:label='lab_AllowanceForLoanLossesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Allowance for Loan Losses Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AllowanceForLoanLossesDiscussion' xlink:to='lab_AllowanceForLoanLossesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AlternativeMeasuresOfPerformanceDiscussion' xlink:label='loc_AlternativeMeasuresOfPerformanceDiscussion' xlink:type='locator' />
<link:label id='lab_AlternativeMeasuresOfPerformanceDiscussion_label_en-US' xlink:label='lab_AlternativeMeasuresOfPerformanceDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Alternative Measures of Performance Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AlternativeMeasuresOfPerformanceDiscussion' xlink:to='lab_AlternativeMeasuresOfPerformanceDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:label='loc_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:type='locator' />
<link:label id='lab_AnalysisOfConsolidatedStatementOfIncomeDiscussion_label_en-US' xlink:label='lab_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Analysis of Consolidated Statement of Income Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:to='lab_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AnticipatedCashFlowDiscussion' xlink:label='loc_AnticipatedCashFlowDiscussion' xlink:type='locator' />
<link:label id='lab_AnticipatedCashFlowDiscussion_label_en-US' xlink:label='lab_AnticipatedCashFlowDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Anticipated Cash Flow Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AnticipatedCashFlowDiscussion' xlink:to='lab_AnticipatedCashFlowDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_AssetQualityDiscussion' xlink:label='loc_AssetQualityDiscussion' xlink:type='locator' />
<link:label id='lab_AssetQualityDiscussion_label_en-US' xlink:label='lab_AssetQualityDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Asset Quality Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AssetQualityDiscussion' xlink:to='lab_AssetQualityDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_BusinessCombinationsDiscussion' xlink:label='loc_BusinessCombinationsDiscussion' xlink:type='locator' />
<link:label id='lab_BusinessCombinationsDiscussion_label_en-US' xlink:label='lab_BusinessCombinationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Business Combinations Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessCombinationsDiscussion' xlink:to='lab_BusinessCombinationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ChangesInAccountingEstimatesDiscussion' xlink:label='loc_ChangesInAccountingEstimatesDiscussion' xlink:type='locator' />
<link:label id='lab_ChangesInAccountingEstimatesDiscussion_label_en-US' xlink:label='lab_ChangesInAccountingEstimatesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Changes in Accounting Estimates Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesInAccountingEstimatesDiscussion' xlink:to='lab_ChangesInAccountingEstimatesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:label='loc_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:type='locator' />
<link:label id='lab_ChangesInAndDisagreementsWithAccountantsDiscussion_label_en-US' xlink:label='lab_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Changes in and Disagreements with Accountants Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:to='lab_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ChangesToPensionPlansAndImpactDiscussion' xlink:label='loc_ChangesToPensionPlansAndImpactDiscussion' xlink:type='locator' />
<link:label id='lab_ChangesToPensionPlansAndImpactDiscussion_label_en-US' xlink:label='lab_ChangesToPensionPlansAndImpactDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Changes to Pension Plans and Impact Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesToPensionPlansAndImpactDiscussion' xlink:to='lab_ChangesToPensionPlansAndImpactDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ContingenciesDiscussion' xlink:label='loc_ContingenciesDiscussion' xlink:type='locator' />
<link:label id='lab_ContingenciesDiscussion_label_en-US' xlink:label='lab_ContingenciesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Contingencies Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ContingenciesDiscussion' xlink:to='lab_ContingenciesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_DepositsAndOtherSourcesOfFundsDiscussion' xlink:label='loc_DepositsAndOtherSourcesOfFundsDiscussion' xlink:type='locator' />
<link:label id='lab_DepositsAndOtherSourcesOfFundsDiscussion_label_en-US' xlink:label='lab_DepositsAndOtherSourcesOfFundsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Deposits and Other Sources of Funds Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DepositsAndOtherSourcesOfFundsDiscussion' xlink:to='lab_DepositsAndOtherSourcesOfFundsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_DerivativesActivitiesDiscussion' xlink:label='loc_DerivativesActivitiesDiscussion' xlink:type='locator' />
<link:label id='lab_DerivativesActivitiesDiscussion_label_en-US' xlink:label='lab_DerivativesActivitiesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Derivatives Activities Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DerivativesActivitiesDiscussion' xlink:to='lab_DerivativesActivitiesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_DescriptionOfBusiness' xlink:label='loc_DescriptionOfBusiness' xlink:type='locator' />
<link:label id='lab_DescriptionOfBusiness_label_en-US' xlink:label='lab_DescriptionOfBusiness' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Description of Business</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DescriptionOfBusiness' xlink:to='lab_DescriptionOfBusiness' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_DiscontinuedOperationsDiscussion' xlink:label='loc_DiscontinuedOperationsDiscussion' xlink:type='locator' />
<link:label id='lab_DiscontinuedOperationsDiscussion_label_en-US' xlink:label='lab_DiscontinuedOperationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Discontinued Operations Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DiscontinuedOperationsDiscussion' xlink:to='lab_DiscontinuedOperationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_DividendsDiscussion' xlink:label='loc_DividendsDiscussion' xlink:type='locator' />
<link:label id='lab_DividendsDiscussion_label_en-US' xlink:label='lab_DividendsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Dividends Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DividendsDiscussion' xlink:to='lab_DividendsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:label='loc_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:type='locator' />
<link:label id='lab_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion_label_en-US' xlink:label='lab_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Effects of Equity Instruments Being Issued or Received from Partners Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:to='lab_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ExposureForAsbestosTreatmentCostsDiscussion' xlink:label='loc_ExposureForAsbestosTreatmentCostsDiscussion' xlink:type='locator' />
<link:label id='lab_ExposureForAsbestosTreatmentCostsDiscussion_label_en-US' xlink:label='lab_ExposureForAsbestosTreatmentCostsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Exposure for Asbestos Treatment Costs Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ExposureForAsbestosTreatmentCostsDiscussion' xlink:to='lab_ExposureForAsbestosTreatmentCostsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_FederalFinancialAssistanceDiscussion' xlink:label='loc_FederalFinancialAssistanceDiscussion' xlink:type='locator' />
<link:label id='lab_FederalFinancialAssistanceDiscussion_label_en-US' xlink:label='lab_FederalFinancialAssistanceDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Federal Financial Assistance Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FederalFinancialAssistanceDiscussion' xlink:to='lab_FederalFinancialAssistanceDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_FeesOfIndependentAuditorsDiscussion' xlink:label='loc_FeesOfIndependentAuditorsDiscussion' xlink:type='locator' />
<link:label id='lab_FeesOfIndependentAuditorsDiscussion_label_en-US' xlink:label='lab_FeesOfIndependentAuditorsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Fees of Independent Auditors Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FeesOfIndependentAuditorsDiscussion' xlink:to='lab_FeesOfIndependentAuditorsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LoansDiscussion' xlink:label='loc_LoansDiscussion' xlink:type='locator' />
<link:label id='lab_LoansDiscussion_label_en-US' xlink:label='lab_LoansDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Loans Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LoansDiscussion' xlink:to='lab_LoansDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_FinancialConditionDiscussion' xlink:label='loc_FinancialConditionDiscussion' xlink:type='locator' />
<link:label id='lab_FinancialConditionDiscussion_label_en-US' xlink:label='lab_FinancialConditionDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Financial Condition Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FinancialConditionDiscussion' xlink:to='lab_FinancialConditionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:label='loc_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:type='locator' />
<link:label id='lab_ForeignOperationsAndForeignCurrencyTransactionsDiscussion_label_en-US' xlink:label='lab_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Foreign Operations and Foreign Currency Transactions Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:to='lab_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ForwardLookingStatementsDiscussion' xlink:label='loc_ForwardLookingStatementsDiscussion' xlink:type='locator' />
<link:label id='lab_ForwardLookingStatementsDiscussion_label_en-US' xlink:label='lab_ForwardLookingStatementsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Forward Looking Statements Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ForwardLookingStatementsDiscussion' xlink:to='lab_ForwardLookingStatementsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ImpactOfInflationDiscussion' xlink:label='loc_ImpactOfInflationDiscussion' xlink:type='locator' />
<link:label id='lab_ImpactOfInflationDiscussion_label_en-US' xlink:label='lab_ImpactOfInflationDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Impact of Inflation Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ImpactOfInflationDiscussion' xlink:to='lab_ImpactOfInflationDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ImpairmentAndGoodwillDiscussion' xlink:label='loc_ImpairmentAndGoodwillDiscussion' xlink:type='locator' />
<link:label id='lab_ImpairmentAndGoodwillDiscussion_label_en-US' xlink:label='lab_ImpairmentAndGoodwillDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Impairment and Goodwill Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ImpairmentAndGoodwillDiscussion' xlink:to='lab_ImpairmentAndGoodwillDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_InvestmentsDiscussion' xlink:label='loc_InvestmentsDiscussion' xlink:type='locator' />
<link:label id='lab_InvestmentsDiscussion_label_en-US' xlink:label='lab_InvestmentsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Investments Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_InvestmentsDiscussion' xlink:to='lab_InvestmentsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:label='loc_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:type='locator' />
<link:label id='lab_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes_label_en-US' xlink:label='lab_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Liquidity Capital Resources, Cash Outlays for Income Taxes</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:to='lab_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:label='loc_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:type='locator' />
<link:label id='lab_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions_label_en-US' xlink:label='lab_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Liquidity Capital Resources, High Yield or Highly Leveraged Transactions</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:to='lab_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:label='loc_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:type='locator' />
<link:label id='lab_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans_label_en-US' xlink:label='lab_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Liquidity Capital Resources, Leveraged Employees Stock Ownership Plans</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:to='lab_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LiquidityCapitalResourcesDiscussion' xlink:label='loc_LiquidityCapitalResourcesDiscussion' xlink:type='locator' />
<link:label id='lab_LiquidityCapitalResourcesDiscussion_label_en-US' xlink:label='lab_LiquidityCapitalResourcesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Liquidity Capital Resources Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesDiscussion' xlink:to='lab_LiquidityCapitalResourcesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ManagementInformationDiscussion' xlink:label='loc_ManagementInformationDiscussion' xlink:type='locator' />
<link:label id='lab_ManagementInformationDiscussion_label_en-US' xlink:label='lab_ManagementInformationDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Management Information Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ManagementInformationDiscussion' xlink:to='lab_ManagementInformationDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RevenueRecognitionDiscussion' xlink:label='loc_RevenueRecognitionDiscussion' xlink:type='locator' />
<link:label id='lab_RevenueRecognitionDiscussion_label_en-US' xlink:label='lab_RevenueRecognitionDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Revenue Recognition Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RevenueRecognitionDiscussion' xlink:to='lab_RevenueRecognitionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ManagementsDiscussionAndAnalysisTextBlock' xlink:label='loc_ManagementsDiscussionAndAnalysisTextBlock' xlink:type='locator' />
<link:label id='lab_ManagementsDiscussionAndAnalysisTextBlock_label_en-US' xlink:label='lab_ManagementsDiscussionAndAnalysisTextBlock' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Management's Discussion and Analysis [Text Block]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ManagementsDiscussionAndAnalysisTextBlock' xlink:to='lab_ManagementsDiscussionAndAnalysisTextBlock' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_MaterialChangesDiscussion' xlink:label='loc_MaterialChangesDiscussion' xlink:type='locator' />
<link:label id='lab_MaterialChangesDiscussion_label_en-US' xlink:label='lab_MaterialChangesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Material Changes Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_MaterialChangesDiscussion' xlink:to='lab_MaterialChangesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_NonperformingAssetsDiscussion' xlink:label='loc_NonperformingAssetsDiscussion' xlink:type='locator' />
<link:label id='lab_NonperformingAssetsDiscussion_label_en-US' xlink:label='lab_NonperformingAssetsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Nonperforming Assets Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NonperformingAssetsDiscussion' xlink:to='lab_NonperformingAssetsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_NetInterestIncomeDiscussion' xlink:label='loc_NetInterestIncomeDiscussion' xlink:type='locator' />
<link:label id='lab_NetInterestIncomeDiscussion_label_en-US' xlink:label='lab_NetInterestIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Net Interest Income Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NetInterestIncomeDiscussion' xlink:to='lab_NetInterestIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_NoninterestExpenseDiscussion' xlink:label='loc_NoninterestExpenseDiscussion' xlink:type='locator' />
<link:label id='lab_NoninterestExpenseDiscussion_label_en-US' xlink:label='lab_NoninterestExpenseDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Noninterest Expense Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NoninterestExpenseDiscussion' xlink:to='lab_NoninterestExpenseDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_NoninterestIncomeDiscussion' xlink:label='loc_NoninterestIncomeDiscussion' xlink:type='locator' />
<link:label id='lab_NoninterestIncomeDiscussion_label_en-US' xlink:label='lab_NoninterestIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Noninterest Income Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NoninterestIncomeDiscussion' xlink:to='lab_NoninterestIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_GeneralOperationsDiscussion' xlink:label='loc_GeneralOperationsDiscussion' xlink:type='locator' />
<link:label id='lab_GeneralOperationsDiscussion_label_en-US' xlink:label='lab_GeneralOperationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>General Operations Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_GeneralOperationsDiscussion' xlink:to='lab_GeneralOperationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_IncomeTaxesDiscussion' xlink:label='loc_IncomeTaxesDiscussion' xlink:type='locator' />
<link:label id='lab_IncomeTaxesDiscussion_label_en-US' xlink:label='lab_IncomeTaxesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Income Taxes Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_IncomeTaxesDiscussion' xlink:to='lab_IncomeTaxesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_ProductDevelopmentDiscussion' xlink:label='loc_ProductDevelopmentDiscussion' xlink:type='locator' />
<link:label id='lab_ProductDevelopmentDiscussion_label_en-US' xlink:label='lab_ProductDevelopmentDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Product Development Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ProductDevelopmentDiscussion' xlink:to='lab_ProductDevelopmentDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk, Qualitative Disclosures</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk, Quantitative Disclosures, General</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk, Sensitivity Analysis</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk, Tabular Presentation</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk, Value at Risk</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:type='locator' />
<link:label id='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion_label_en-US' xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RestructuringChargesDiscussion' xlink:label='loc_RestructuringChargesDiscussion' xlink:type='locator' />
<link:label id='lab_RestructuringChargesDiscussion_label_en-US' xlink:label='lab_RestructuringChargesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Restructuring Charges Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesDiscussion' xlink:to='lab_RestructuringChargesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RestructuringChargesMaterialRestructuringCharges' xlink:label='loc_RestructuringChargesMaterialRestructuringCharges' xlink:type='locator' />
<link:label id='lab_RestructuringChargesMaterialRestructuringCharges_label_en-US' xlink:label='lab_RestructuringChargesMaterialRestructuringCharges' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Restructuring Charges, Material Restructuring Charges</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesMaterialRestructuringCharges' xlink:to='lab_RestructuringChargesMaterialRestructuringCharges' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:label='loc_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:type='locator' />
<link:label id='lab_RestructuringChargesNatureAndAmountsOfExitCosts_label_en-US' xlink:label='lab_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Restructuring Charges, Nature and Amounts of Exit Costs</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:to='lab_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RestructuringChargesPriorPeriodRestructuringCharges' xlink:label='loc_RestructuringChargesPriorPeriodRestructuringCharges' xlink:type='locator' />
<link:label id='lab_RestructuringChargesPriorPeriodRestructuringCharges_label_en-US' xlink:label='lab_RestructuringChargesPriorPeriodRestructuringCharges' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Restructuring Charges, Prior Period Restructuring Charges</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesPriorPeriodRestructuringCharges' xlink:to='lab_RestructuringChargesPriorPeriodRestructuringCharges' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_RevenueDiscussion' xlink:label='loc_RevenueDiscussion' xlink:type='locator' />
<link:label id='lab_RevenueDiscussion_label_en-US' xlink:label='lab_RevenueDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Revenue Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RevenueDiscussion' xlink:to='lab_RevenueDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_BusinessSegmentsForeignOperationsRisks' xlink:label='loc_BusinessSegmentsForeignOperationsRisks' xlink:type='locator' />
<link:label id='lab_BusinessSegmentsForeignOperationsRisks_label_en-US' xlink:label='lab_BusinessSegmentsForeignOperationsRisks' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Business Segments, Foreign Operations Risks</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsForeignOperationsRisks' xlink:to='lab_BusinessSegmentsForeignOperationsRisks' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_BusinessSegmentsDiscussion' xlink:label='loc_BusinessSegmentsDiscussion' xlink:type='locator' />
<link:label id='lab_BusinessSegmentsDiscussion_label_en-US' xlink:label='lab_BusinessSegmentsDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Business Segments Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsDiscussion' xlink:to='lab_BusinessSegmentsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_BusinessSegmentsPrincipleMarketsDistribution' xlink:label='loc_BusinessSegmentsPrincipleMarketsDistribution' xlink:type='locator' />
<link:label id='lab_BusinessSegmentsPrincipleMarketsDistribution_label_en-US' xlink:label='lab_BusinessSegmentsPrincipleMarketsDistribution' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Business Segments, Principle Markets Distribution</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsPrincipleMarketsDistribution' xlink:to='lab_BusinessSegmentsPrincipleMarketsDistribution' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:label='loc_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:type='locator' />
<link:label id='lab_BusinessSegmentsRevenueContributedByTypeOfProductOrService_label_en-US' xlink:label='lab_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Business Segments, Revenue Contributed by Type of Product or Service</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:to='lab_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_SelectedFinancialDataMattersAffectingComparability' xlink:label='loc_SelectedFinancialDataMattersAffectingComparability' xlink:type='locator' />
<link:label id='lab_SelectedFinancialDataMattersAffectingComparability_label_en-US' xlink:label='lab_SelectedFinancialDataMattersAffectingComparability' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Selected Financial Data, Matters Affecting Comparability</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialDataMattersAffectingComparability' xlink:to='lab_SelectedFinancialDataMattersAffectingComparability' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:label='loc_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:type='locator' />
<link:label id='lab_SelectedFinancialDataProFormaInformationForAccountingChange_label_en-US' xlink:label='lab_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Selected Financial Data, Pro Forma Information for Accounting Change</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:to='lab_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_SelectedFinancialData' xlink:label='loc_SelectedFinancialData' xlink:type='locator' />
<link:label id='lab_SelectedFinancialData_label_en-US' xlink:label='lab_SelectedFinancialData' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Selected Financial Data</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialData' xlink:to='lab_SelectedFinancialData' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_SignificantAccountingPoliciesAndAssumptions' xlink:label='loc_SignificantAccountingPoliciesAndAssumptions' xlink:type='locator' />
<link:label id='lab_SignificantAccountingPoliciesAndAssumptions_label_en-US' xlink:label='lab_SignificantAccountingPoliciesAndAssumptions' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Significant Accounting Policies and Assumptions</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SignificantAccountingPoliciesAndAssumptions' xlink:to='lab_SignificantAccountingPoliciesAndAssumptions' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_EuroConversionDiscussion' xlink:label='loc_EuroConversionDiscussion' xlink:type='locator' />
<link:label id='lab_EuroConversionDiscussion_label_en-US' xlink:label='lab_EuroConversionDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Euro Conversion Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EuroConversionDiscussion' xlink:to='lab_EuroConversionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_CostAndExpenseDiscussion' xlink:label='loc_CostAndExpenseDiscussion' xlink:type='locator' />
<link:label id='lab_CostAndExpenseDiscussion_label_en-US' xlink:label='lab_CostAndExpenseDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Cost and Expense Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_CostAndExpenseDiscussion' xlink:to='lab_CostAndExpenseDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:label='loc_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:type='locator' />
<link:label id='lab_LiquidityCapitalResourcesChangesInEarningsPerShare_label_en-US' xlink:label='lab_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Liquidity Capital Resources, Changes in Earnings Per Share</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:to='lab_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_EffectsOfChangingPricesDiscussion' xlink:label='loc_EffectsOfChangingPricesDiscussion' xlink:type='locator' />
<link:label id='lab_EffectsOfChangingPricesDiscussion_label_en-US' xlink:label='lab_EffectsOfChangingPricesDiscussion' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Effects of Changing Prices Discussion</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfChangingPricesDiscussion' xlink:to='lab_EffectsOfChangingPricesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:label='loc_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:type='locator' />
<link:label id='lab_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources_label_en-US' xlink:label='lab_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Effects of Gas Imbalances on Operations, Liquidity, and Capital Resources</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:to='lab_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:type='arc' />
<link:loc xlink:href='mda-2009-01-31.xsd#mda_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:label='loc_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:type='locator' />
<link:label id='lab_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses_label_en-US' xlink:label='lab_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Trends and Uncertainties Related to Oil and Gas Exploration Expenses</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:to='lab_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:type='arc' />
</link:labelLink>
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