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        <PersonNm>Ken Rosenfield MD</PersonNm>
        <TitleTxt>Director (part year)</TitleTxt>
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        <PersonNm>Juli Gardner Spencer</PersonNm>
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        <PersonNm>Seth Sokol MD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Dean Stratouly</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Mae West MD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Alison Witkin MD</PersonNm>
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        <PersonNm>John Moriarty</PersonNm>
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        <PersonNm>Rachel Rosovsky MD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Amy Ranier</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Roy Smith MD</PersonNm>
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        <PersonNm>Mahir Elder MD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Tom Todoran MD</PersonNm>
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        <OfficerInd>X</OfficerInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Michelle Lanno</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Jamie Lynn Reed</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <ContractorCompensationGrp>
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          <BusinessName>
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          <USAddress>
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            <StateAbbreviationCd>MA</StateAbbreviationCd>
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      <CntrctRcvdGreaterThan100KCnt>1</CntrctRcvdGreaterThan100KCnt>
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      <ProgramServiceRevenueGrp>
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      <ProgramServiceRevenueGrp>
        <Desc>PERT Symposium</Desc>
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      <ProgramServiceRevenueGrp>
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        <RelatedOrExemptFuncIncomeAmt>280781</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>Miscellaneous Programs</Desc>
        <BusinessCd>541900</BusinessCd>
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      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>-245758</TotalRevenueColumnAmt>
        <ExclusionAmt>-245758</ExclusionAmt>
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      <GrossSalesOfInventoryAmt>2000</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>2000</TotalRevenueColumnAmt>
        <ExclusionAmt>2000</ExclusionAmt>
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      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>2029016</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2007074</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>-235867</ExclusionAmt>
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      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>336485</TotalAmt>
        <ProgramServicesAmt>152571</ProgramServicesAmt>
        <ManagementAndGeneralAmt>107703</ManagementAndGeneralAmt>
        <FundraisingAmt>76211</FundraisingAmt>
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      <OtherSalariesAndWagesGrp>
        <TotalAmt>143781</TotalAmt>
        <ProgramServicesAmt>65157</ProgramServicesAmt>
        <ManagementAndGeneralAmt>46036</ManagementAndGeneralAmt>
        <FundraisingAmt>32588</FundraisingAmt>
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      <OtherEmployeeBenefitsGrp>
        <TotalAmt>36687</TotalAmt>
        <ProgramServicesAmt>19571</ProgramServicesAmt>
        <ManagementAndGeneralAmt>10592</ManagementAndGeneralAmt>
        <FundraisingAmt>6524</FundraisingAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>28065</TotalAmt>
        <ProgramServicesAmt>14972</ProgramServicesAmt>
        <ManagementAndGeneralAmt>8103</ManagementAndGeneralAmt>
        <FundraisingAmt>4990</FundraisingAmt>
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      <FeesForServicesLegalGrp>
        <TotalAmt>42548</TotalAmt>
        <ManagementAndGeneralAmt>42548</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>58630</TotalAmt>
        <ManagementAndGeneralAmt>58630</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>212504</TotalAmt>
        <ProgramServicesAmt>154932</ProgramServicesAmt>
        <ManagementAndGeneralAmt>49072</ManagementAndGeneralAmt>
        <FundraisingAmt>8500</FundraisingAmt>
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      <AdvertisingGrp>
        <TotalAmt>111115</TotalAmt>
        <ProgramServicesAmt>81733</ProgramServicesAmt>
        <ManagementAndGeneralAmt>29382</ManagementAndGeneralAmt>
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      <OfficeExpensesGrp>
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        <ProgramServicesAmt>109928</ProgramServicesAmt>
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      <InformationTechnologyGrp>
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        <ProgramServicesAmt>12895</ProgramServicesAmt>
        <ManagementAndGeneralAmt>24184</ManagementAndGeneralAmt>
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      <OccupancyGrp>
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        <ManagementAndGeneralAmt>7194</ManagementAndGeneralAmt>
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      <TravelGrp>
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        <ProgramServicesAmt>172448</ProgramServicesAmt>
        <ManagementAndGeneralAmt>38860</ManagementAndGeneralAmt>
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      <ConferencesMeetingsGrp>
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        <ProgramServicesAmt>268953</ProgramServicesAmt>
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      <DepreciationDepletionGrp>
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        <ManagementAndGeneralAmt>1546</ManagementAndGeneralAmt>
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      <InsuranceGrp>
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        <ManagementAndGeneralAmt>2515</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>31675</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>Conference management</Desc>
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        <ProgramServicesAmt>22000</ProgramServicesAmt>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>1106835</ProgramServicesAmt>
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      <SavingsAndTempCashInvstGrp>
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        <EOYAmt>1156381</EOYAmt>
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      <AccountsReceivableGrp>
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        <EOYAmt>796472</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>44172</EOYAmt>
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      <LandBldgEquipBasisNetGrp>
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        <EOYAmt>0</EOYAmt>
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      <IntangibleAssetsGrp>
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        <EOYAmt>58612</EOYAmt>
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        <EOYAmt>2055637</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>64643</EOYAmt>
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      <DeferredRevenueGrp>
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        <EOYAmt>853750</EOYAmt>
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        <EOYAmt>918393</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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        <EOYAmt>1137244</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
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        <EOYAmt>1137244</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>2055637</EOYAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
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      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
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        <CurrentTaxYearMinus3YearsAmt>1600795</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>806</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>624179</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>257809</CurrentTaxYearAmt>
        <TotalAmt>3786462</TotalAmt>
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        <CurrentTaxYearMinus3YearsAmt>1600795</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>806</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>624179</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>257809</CurrentTaxYearAmt>
        <TotalAmt>3786462</TotalAmt>
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        <CurrentTaxYearMinus2YearsAmt>91</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1033</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>7891</CurrentTaxYearAmt>
        <TotalAmt>9046</TotalAmt>
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        <CurrentTaxYearAmt>2000</CurrentTaxYearAmt>
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        <ContributorBusinessName>
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        <ContributorUSAddress>
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          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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        <DepreciationAmt>12630</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <DonatedServicesAndUseFcltsAmt>8317</DonatedServicesAndUseFcltsAmt>
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      <RevenueSubtotalAmt>2029016</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>2029016</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>2040993</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>8317</DonatedServicesUseFcltsAmt>
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      <ExpensesNotReportedAmt>277825</ExpensesNotReportedAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization is exempt from federal income tax under Section 501(c)(3) of the Internal Revenue Code. As such, no tax provisions have been made in the accompanying financial statements. The Organization has adopted provisions of the Financial Accounting Standards Board (FASB) in ASC Topic 740-10. The Organization's policy is to evaluate all tax positions on an annual basis in conjunction with the filing of the annual return of organization exempt from income tax. Interest and penalties assessed by income taxing authorities would be included in administrative expense. For 2023 and 2022, there were no penalties or interest assessed or paid. The Organization files informational returns in the U.S. federal and state jurisdictions.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Fundraising event expenses 269,508.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Fundraising event expenses 269,508.</ExplanationTxt>
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    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <FundraisingEventInformationGrp>
        <Event1Nm>Gala</Event1Nm>
        <GrossReceiptsEvent1Amt>210150</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>186400</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>23750</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>53479</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>49800</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>5400</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>160829</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>210150</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>186400</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>23750</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>53479</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>49800</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>5400</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>160829</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>269508</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-245758</NetIncomeSummaryAmt>
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    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
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      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
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        <PersonNm>Michelle Lanno</PersonNm>
        <TitleTxt>Executive Director</TitleTxt>
        <BaseCompensationFilingOrgAmt>335405</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Dr. Brent Keeling and Amy Ranier, both of whom served on the Organization's Board during the period covered by this Form 990, share a family relationship.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>Members shall initially be elected by the directors at their initial meeting and thereafter by the Member Institutions of the corporation at a meeting of such members. Membership of the Corporation shall consist of the following classes: Institutional and Professional. Member Institutions. Institutional membership shall be limited to hospitals and other healthcare facilities and their respective affiliates ("Member Institutions") that have a pulmonary embolism response team (PERT) and that operate a PERT center as such may be defined and designated from time to time by the Consortium (a "PERT Center"). Member Institutions shall have the right to vote at all meetings of the corporation. Each Member Institution shall file with the Consortium, as least sixty (60) days prior to the annual meeting, the names of its delegates and alternate delegates for the purposes of exercising all of the membership rights on behalf of the Member Institution. Professional Members. Each Member Institution shall have the right to designate at least one Professional member per year. The total number of Professional members each Member Institution may designate each year shall be fixed by the Consortium from time to time. Professional membership shall be limited to physicians, technologists, advanced practitioners, and nurses who are actively working in the field pulmonary embolism at a PERT Center. Professional members are non-voting members of the corporation and shall otherwise have all the rights and privileges of membership as determined by the Board of Directors from time to time.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>Member Institutions shall have the right to elect Directors provided by the Organization's bylaws. Members may be removed with or without cause by a vote of two thirds (2/3) of the members then in office, or removed for cause by a vote of a majority of the Directors then in office. A Member Institution may be removed for cause only after reasonable notice and opportunity to be heard. In addition, Member Institutions may remove or add Professional members upon notice to the corporation. Except as otherwise provided by law, by the Articles of Organization, or by the Organization's Bylaws, the Board of Directors shall be elected at the annual meeting of the Members in the manner prescribed by law, by the Articles of Organization, and by the Bylaws. Nomination for election to the Board of Directors may be made by written nomination of the Members, the Nominating Committee or by self-nomination. No nomination will be presented to the general membership for voting without the consent of the proposed nominee. A Director may be removed with or without cause by vote of a majority of the Members then in office. Any vacancy in the Board of Directors may be filled by the Members or, in the absence of Member action, by a majority of the Directors then in office, although less than a quorum, or by a sole, remaining Director; except that vacancies resulting from enlargement of the Board of Directors may be filled only by the Members and not by the Directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>Member Institutions shall have such other powers and rights as the Directors may designate. Affairs of the Corporation shall be managed by the Board of Directors which shall have and may exercise all the powers of the Corporation, except those powers reserved to the Member Institutions by law, the Articles of Organization, or the Organization's Bylaws. The Organization's Bylaws may be amended or repealed upon the affirmative vote of the Member Institutions of the Corporation, provided that the substance of any such amendment is stated in the notice of the meeting of Member Institutions. Any Bylaw adopted by the Directors may be amended or repealed by the Member Institutions. Any transaction questioned on the ground of lack of authority, defective or irregular execution, adverse interest of a Director, officer, or Member, nondisclosure, miscomputation, or the application of improper principles or practices of accounting, or on any other grounds, may be ratified before or after judgment by the Board of Directors or by the Members entitled to vote; and, if so ratified, shall have the same force and effect as if the questioned transaction had been originally duly authorized, and such ratification shall be binding upon the corporation and shall constitute a bar to any claim or execution of any judgment in respect of such questioned transaction.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization's Form 990 is presented to the Board for review and approval before filing with the Internal Revenue Service.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The PERT Consortium conflict of interest policy is based on the basic tenet that transparency in the operations and decision-making of the organization is essential to the optimal functioning of the organization. To achieve the objective of avoiding any misunderstanding or doubts between and among members of the Consortium regarding the existence of possible conflicts, the conflicts policy is designed to be inclusive, straightforward, and easy to apply. The Organization requires its board members to disclose any situations where there might only be a potential conflict or simply the appearance of a possible conflict of interest. Accordingly, members shall promptly report to the Board of Directors any relationship they or immediate family members have of a personal, professional, or economic nature - including, but not limited to, any outside business interest, consulting relationship, speaking engagement arrangement, or other financial interest with an existing or potential PERT vendor or sponsor, or business competitor of such a sponsor, or any family or personal relationship (anything beyond friendship) - that potentially does or may create an interest that conflicts with the exclusive best interests of PERT. The curative for conflicts of interest is recusal by the member from decision making with regard to the subject matter that gives rise to the conflict.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization's Board of Directors reviews comparability data to determine the appropriate compensation of the Organization's executive director and financial manager. An officer shall be entitled to receive reasonable compensation for services if so determined by the Board of Directors and in such amounts as the Board of Directors may from time to time determine. Officers shall not be precluded from serving the corporation in any other capacity and receiving reasonable compensation for any such services in such amounts as the Board of Directors may from time to time determine.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization's governing documents and financial statements are available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Contract services: Program service expenses 154,932. Management and general expenses 49,072. Fundraising expenses 8,500. Total expenses 212,504.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, Line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>The audit process did not change from the prior year.</ExplanationTxt>
      </SupplementalInformationDetail>
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