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        <PersonNm>BRIAN F MEYERS</PersonNm>
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        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <PersonNm>ROBERT A WYNBRANDT</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SYLVIA L NOVICK</PersonNm>
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        <ReportableCompFromOrgAmt>239274</ReportableCompFromOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>WILLIAM F SEWARD</PersonNm>
        <TitleTxt>ASSOCIATE EXECUTIIVE DIRECTOR</TitleTxt>
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        <PersonNm>CYNTHIA M SHEWAN</PersonNm>
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        <PersonNm>DELAINE S SCHMITZ</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DAMON K MARQUIS</PersonNm>
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        <PersonNm>W GRAHAME RUSH</PersonNm>
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      <ContractorCompensationGrp>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY IS A NOT-FOR-PROFIT CORPORATION AND IS EXEMPT FROM TAX UNDER THE PROVISIONS OF INTERNAL REVENUE CODE SECTION 501(C)(6). ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA REQUIRE MANAGEMENT TO EVALUATE TAX POSITIONS TAKEN BY THE SOCIETY AND RECOGNIZE A TAX LIABILITY IF THE SOCIETY HAS TAKEN AN UNCERTAIN POSITIONS THAT MORE LIKELY THAN NOT WOULD NOT BE SUSTAINED UPON EXAMINATION BY THE IRS OR OTHER APPLICABLE TAX AUTHORITIES. MANAGEMENT HAS ANALYZED THE TAX POSITIONS TAKEN BY THE SOCIETY AND HAS CONCLUDED THAT AS OF DECEMBER 31, 2014, THERE ARE NO UNCERTAIN POSITIONS TAKEN OR EXPECTED TO BE TAKEN THAT WOULD REQUIRE RECOGNITION OF A LIABILITY OR DISCLOSURE IN THE FINANCIAL STATEMENTS, SUBJECT TO THE RESULTS OF THE IRS AUDIT DISCUSSED IMMEDIATELY BELOW. THE SOCIETY IS SUBJECT TO ROUTINE AUDITS BY TAXING JURISDICTIONS. THE IRS IS IN THE PROCESS OF AUDITING THE SOCIETY'S 2011 FORMS 990 AND 990-T AND, AS OF APRIL 9, 2015, IT HAD NOT CONCLUDED ITS AUDIT. MANAGEMENT DOES NOT EXPECT TO MAKE ANY ADJUSTMENTS. IN ADDITION, MANAGEMENT BELIEVES IT IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS FOR YEARS PRIOR TO 2008.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 11F</FormAndLineReferenceDesc>
        <ExplanationTxt>ON AUGUST 11, 2015, THE SOCIETY'S RECEIVED IRS FORM 886A ("REVENUE AGENT REPORT") RELATED TO THE IRS AUDIT OF STS FORMS 990 AND 990-T FOR 2011, 2012 AND 2013, IN WHICH THE IRS REVENUE AGENT RESPONSIBLE FOR THE AUDIT CONCLUDED THAT ROYALTY REVENUE RECEIVED BY THE SOCIETY IN CONNECTION WITH THE ANNALS OF THORACIC SURGERY WAS TAXABLE INCOME. THE SOCIETY STRONGLY DISAGREES WITH THIS CONCLUSION, AND THEREFORE FILED A LETTER OF PROTEST AND REQUEST FOR APPEAL WITH THE IRS ON SEPTEMBER 8, 2015. THAT APPEAL IS NOW PENDING.</ExplanationTxt>
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        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>AATS MEETING</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>MEETING PARTICIPATION</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>14642</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>MIDDLE EAST</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>ASCVTS MEETINGESTS MEETING</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>MEETING PARTICIPATION</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>19955</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>EACTS MEETING</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>MEETING PARTICIPATION</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>45622</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>ESTS MEETING</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>MEETING PARTICIPATION</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>13648</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinutationTotalOfficeCnt>0</ContinutationTotalOfficeCnt>
      <ContinutationTotalEmployeeCnt>0</ContinutationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>93867</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>93867</TotalSpentAmt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>FAIR VALUE</ExplanationTxt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>CAMPAIGN FOR TOBACCO-FREE KIDS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1400 I STREET NW NO 1200</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
        </USAddress>
        <RecipientEIN>521969967</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>12000</CashGrantAmt>
        <PurposeOfGrantTxt>GENERAL FUNDING</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AMERICAN ASSOCIATION FOR THORACIC SURGERY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>500 CUMMINGS CENTER SUITE 4550</AddressLine1Txt>
          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
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        <RecipientEIN>046406547</RecipientEIN>
        <IRCSectionDesc>501C6</IRCSectionDesc>
        <CashGrantAmt>9250</CashGrantAmt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AMERICAN COLLEGE OF SURGEONS</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>633 N ST CLAIR ST</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
        </USAddress>
        <RecipientEIN>362192800</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>4000</CashGrantAmt>
        <PurposeOfGrantTxt>SCHOLARSHIP FUND</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <TotalOtherOrgCnt>1</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAVEL EXPENSE REIMBURSEMENT</GrantTypeTxt>
        <RecipientCnt>44</RecipientCnt>
        <CashGrantAmt>17856</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LODGING EXPENSES PAID BY STS</GrantTypeTxt>
        <RecipientCnt>44</RecipientCnt>
        <CashGrantAmt>32266</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>RECIPIENT RECEIVES A SCHOLARSHIP FOR TRAVEL AND LODGING EXPENSES AS APPROVED BY THE WORKFORCE (WF) ON THORACIC SURGERY RESIDENT ISSUES. CORRESPONDING EXPENSES ARE AUTHORIZED AND APPROVED BY STS STAFF IN ACCORDANCE WITH DIRECTIVES BY THE WF.</ExplanationTxt>
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    </IRS990ScheduleI>
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      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>1</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBERT A WYNBRANDT</PersonNm>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>136421</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>235825</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20833</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>32585</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>968031</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>235825</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SYLVIA L NOVICK</PersonNm>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>12350</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>22900</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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        <DeferredCompensationFlngOrgAmt>9518</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>322791</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CYNTHIA M SHEWAN</PersonNm>
        <TitleTxt>DIRECTOR - RESEARCH</TitleTxt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1440</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7709</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>11852</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>206383</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DELAINE S SCHMITZ</PersonNm>
        <TitleTxt>DIRECTOR - QUALITY</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <TotalCompensationFilingOrgAmt>197957</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DAMON K MARQUIS</PersonNm>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>W GRAHAME RUSH</PersonNm>
        <TitleTxt>DIRECTOR - INFORMATION SERVICES</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>12476</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8522</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16454</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>192894</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NATALIE J BODEN</PersonNm>
        <TitleTxt>DIRECTOR - MARKETING AND COMMUNICATI</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>11934</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8037</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>24967</NontaxableBenefitsFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>188747</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GEORGE P BOHN</PersonNm>
        <TitleTxt>CONTROLLER</TitleTxt>
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        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>2767</DeferredCompensationFlngOrgAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B</FormAndLineReferenceDesc>
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    </IRS990ScheduleJ>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. FULLERTON IS A NON-COMPENSATED MEMBER OF THE BOARD OF DIRECTORS OF GENESEE BIOMEDICAL WHICH PAID STS A FEE TO EXHIBIT AT THE STS ANNUAL MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS A MEMBERSHIP SOCIETY AND HAS ALMOST 7,200 MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>CERTAIN DECISIONS OF THE GOVERNING BODY (E.G., REGARDING DUES AND BYLAWS AMENDMENTS) ARE SUBJECT TO APPROVAL BY MEMBERS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION RETAINED THE SERVICES OF AN INDEPENDENT CPA FIRM TO PREPARE ITS FORM 990. MANAGEMENT THEN REVIEWED THE COMPLETED FORM 990 AND PROVIDED A FULL COPY TO ALL VOTING MEMBERS OF THE ORGANIZATION'S BOARD OF DIRECTORS (I.E., THE GOVERNING BODY). THE VOTING MEMBERS OF THE GOVERNING BODY WERE GIVEN A REASONABLE AMOUNT OF TIME TO REVIEW THE RETURN AND ASK ANY QUESTIONS DIRECTLY TO MANAGEMENT OR SENIOR CORPORATE OFFICERS. FINALLY, THE ORGANIZATION'S SENIOR OFFICERS MET WITH MANAGEMENT AND DISCUSSED THE RETURN PRIOR TO FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS, DIRECTORS, KEY EMPLOYEES, AND OTHERS ARE ANNUALLY REQUIRED TO COMPLETE A CONFLICT OF INTEREST DISCLOSURE STATEMENT AS A REQUIREMENT OF SERVICE. THE STATEMENT ON STS DISCLOSURE POLICY AND GUIDELINES REGARDING CONFLICTS OF INTEREST IS READ AT THE BEGINNING OF EVERY BOARD OF DIRECTORS, COMMITTEE, COUNCIL OPERATING BOARD, AND WORKFORCE MEETING. IF A CONFLICT OF INTEREST OR THE APPEARANCE OF A CONFLICT OF INTEREST EXISTS, THE PERSON WITH SUCH A CONFLICT MUST DISCLOSE THE RELATIONSHIP AND REFRAIN FROM VOTING ON THE MATTER; IF THE NATURE OF THE RELATIONSHIP SUGGESTS THAT HIS OR HER PRESENCE MAY BE DETRIMENTAL TO THE DISCUSSION, HE OR SHE MUST EXIT THE MEETING. THE MEETING CHAIR MAKES THE FINAL DETERMINATION AS TO THE APPROPRIATE ACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>15A. THE SOCIETY ENGAGES AN INDEPENDENT COMPENSATION CONSULTANT PERIODICALLY, USUALLY EVERY TWO OR THREE YEARS, TO PERFORM A MARKET SALARY ANALYSIS FOR THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL POSITION. THE SAME PROCESS THAT IS USED TO DETERMINE THE SALARY FOR THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL AS FOR STS EMPLOYED STAFF DIRECTORS, INCLUDING COMPARATIVE SALARY DATA FOR SIMILAR POSITIONS OBTAINED FROM FORMS 990 OF OTHER NATIONAL MEDICAL SPECIALTY SOCIETIES. THIS INFORMATION IS SHARED WITH THE EXECUTIVE COMMITTEE WHICH DETERMINES THE NEW LEVEL OF COMPENSATION AND COMMUNICATES THE SALARY INFORMATION TO THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL AND TO THE DIRECTOR OF FINANCE &amp; ADMINISTRATION FOR IMPLEMENTATION. AN INDEPENDENT COMPENSATION CONSULTANT WAS UTILIZED AS A PART OF THIS PROCESS IN 2012, BUT NOT IN 2013 OR 2014. AN ADJUSTMENT IS MADE TO THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL'S SALARY ANNUALLY FOR A MERIT INCREASE, WHICH IS BASED ON A FORMAL PERFORMANCE EVALUATION. 15B. COMPENSATION - THE SOCIETY ENGAGES AN INDEPENDENT COMPENSATION CONSULTANT PERIODICALLY, USUALLY EVERY TWO OR THREE YEARS, TO PERFORM A MARKET SALARY ANALYSIS FOR STS POSITIONS. THE CONSULTANT MEETS WITH THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL AND EACH STAFF DIRECTOR TO ASCERTAIN INFORMATION RELEVANT TO EACH POSITION. THE CONSULTANT ALSO REVIEWS EACH OF THE POSITION DESCRIPTIONS, DETERMINES APPROPRIATE MATCHES FROM COMPENSATION MARKET SURVEYS, E.G., TOWERS WATSON, PRM, ASSOCIATION FORUM, AND ASAE, FOR COMPARABLE POSITIONS AT SIMILARLY SITUATED ORGANIZATIONS, AND COMPILES AND ANALYZES THIS MARKET DATA FOR EACH POSITION. THE CONSULTANT MEETS WITH THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL AND THE DIRECTOR OF FINANCE &amp; ADMINISTRATION TO REVIEW THE COMPENSATION ANALYSIS, AND MAKES ADJUSTMENTS TO THE ANALYSIS, AS APPROPRIATE, BASED ON ADDITIONAL DATA PROVIDED BY THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL AND DIRECTOR OF FINANCE &amp; ADMINISTRATION. UTILIZING THE CONSULTANT'S ANALYSIS, THE EXECUTIVE DIRECTOR &amp; GENERAL COUNSEL MAKES SALARY ADJUSTMENTS AND COMMUNICATES NEW SALARIES IN WRITING TO OTHER KEY EMPLOYEES OF THE ORGANIZATION, AND SENDS THE DATA TO THE STS TREASURER FOR REVIEW. AN INDEPENDENT COMPENSATION CONSULTANT WAS UTILIZED AS PART OF THIS PROCESS IN 2012, BUT NOT IN 2013 OR 2014. ADJUSTMENTS ARE MADE TO SALARIES ANNUALLY FOR MERIT INCREASES, WHICH ARE BASED ON FORMAL PERFORMANCE EVALUATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S BYLAWS AND KEY GOVERNANCE POLICIES ARE AVAILABLE TO THE PUBLIC ON THE STS WEBSITE. OTHER GOVERNING DOCUMENTS, AS WELL AS THE ORGANIZATION'S CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST TO THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANTS 909,502. RECRUITMENT 203,171. DATA AUDITING 473,466. DATA WAREHOUSING &amp; ANALYSIS 2,298,722. TEMP. SERVICES 121,573. MISCELLANEOUS 69,146. VENDOR CERTIFICATIONS 255,153.</ExplanationTxt>
      </SupplementalInformationDetail>
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          <BusinessNameLine1Txt>SOCIETY OF THORACIC SURGEONS POLITICAL ACTION COMMITTEE</BusinessNameLine1Txt>
        </DisregardedEntityName>
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          <AddressLine1Txt>20 F STREET NW SUITE 310C</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20001</ZIPCd>
        </USAddress>
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        <PrimaryActivitiesTxt>POLITICAL ACTION COMMITTEE</PrimaryActivitiesTxt>
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      <IdRelatedTaxExemptOrgGrp>
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        <USAddress>
          <AddressLine1Txt>633 N ST CLAIR ST 23RD FL</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
        </USAddress>
        <EIN>363635910</EIN>
        <PrimaryActivitiesTxt>RESEARCH AND EDUCATION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
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          <BusinessNameLine1Txt>SOCIETY OF THORACIC SURGEONS</BusinessNameLine1Txt>
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      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>TSFRE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>R</TransactionTypeTxt>
        <InvolvedAmt>367639</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH PAID</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>TSFRE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>S</TransactionTypeTxt>
        <InvolvedAmt>190975</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH PAID</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
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</Return>