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        <TitleTxt>Officer CMCRI, EVP Chief Financial Officer and Treasurer CHST</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3 Arrangement used to establish the top management official's compensation</FormAndLineReferenceDesc>
        <ExplanationTxt>The President of Children's Medical Center Research Institute at the University of Texas Southwestern Medical Center (CMCRI) receives compensation according to a consulting agreement executed and under the authority of Children's Medical Center of Dallas (EIN 75-0800628). Michael Serber, an officer of CMCRI, is neither an employee of nor compensated by CMCRI. Mr. Serber is an employee of the University of Texas Southwestern Medical Center (UTSWMC). UTSWMC is not a related organization of CMCRI. Therefore, there is no compensation reported for Mr. Serber on CMCRI's Form 990. CMCRI'S Other Officers AND KEY EMPLOYEES ARE EMPLOYED AND COMPENSATED BY CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST). CHST IS THE SOLE MEMBER and common paying agent for those employees that are employed and compensated by CHST for the benefit of CMCRI. The CHST process for determining executive compensation is as follows: The Human Resources Committee (Committee) of the CHST Board is responsible for setting the compensation for executives. The Committee is comprised of independent, non-employee directors. A written compensation philosophy has been developed by the Human Resources Committee for timeliness and appropriateness and defines the desired peer groups for compensation surveys. COMPENSATION PROGRAM COMPONENTS: The elements of total compensation provided to CHST executives include: - Cash compensation (i.e., base salary, short-term and long-term incentive compensation, and/or other cash compensation), determined in consideration of competitive market practices, organizational and individual performance, recruitment and retention considerations, and other relevant factors. - Standard benefits, assisting in each executive's medical, dental, disability, life insurance, time off, and retirement needs, reflective of the employment status (i.e., full or part time) of the executive. - Supplemental benefits, including supplemental insurance, retirement benefits, and/or other supplemental benefits determined by the Committee to be appropriate and reasonable in relation to marketplace practices. Compensation and benefits decisions are made in consideration of each executive's position, responsibilities, skills, effort, and performance, in relation to documented practices within the appropriate comparator group(s). PEER GROUP: The Committee has defined its primary peer group for executives as not-for-profit health care organizations similar in size, structure, and complexity. This group will include leading pediatric health systems as well as integrated health systems and academic medical centers. - Data will be compiled in a manner consistent with the IRS Intermediate Sanctions rules of federal tax law, to reflect what is "ordinarily paid to like executives by like enterprises under like circumstances." - In certain circumstances, market data from additional comparator groups (e.g., research institutions, insurance industry, and general industry companies) may also be referenced. - The specific nature of the role at CHST will be considered when adding comparator groups outside of the primary peer group, and the Committee will discuss and agree on the appropriateness of adding comparator groups whenever the specific nature of the CHST role requires additional comparator groups to be used.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4b Supplemental nonqualified retirement plan</FormAndLineReferenceDesc>
        <ExplanationTxt>* Retirement Income Restoration Plan - Christopher J Durovich received $550,086 as taxable income from the Retirement Income Restoration Plan in 2016. No other employees participated in the Retirement Income Restoration Plan. * Savings Restoration Plan - Christopher J Durovich received $66,503 as taxable income from the Savings Restoration Plan. Additional employees who participated in the Savings Restoration Plan were Michele Chulick, David Eager, Lawrence Foust and Jeffrey Vawrinek.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 7 Non-fixed payments</FormAndLineReferenceDesc>
        <ExplanationTxt>Non-Fixed Payments - The Human Resources Committee of the Board of Directors retains the authority to adjust annual payout percentages solely at their discretion. There were no non-fixed payments in 2016.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="16000421" softwareVersionNum="2016v3.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2a</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST) EIN 75-2062019 IS THE COMMON PAYING AGENT FOR CHILDREN'S MEDICAL CENTER RESEARCH INSTITUTE AT THE UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL CENTER (CMCRI) THEREFORE, ALL APPLICABLE IRS TAX COMPLIANCE FILINGS ARE REPORTED BY CHST ON BEHALF OF CMCRI. CMCRI HAS APPROXIMATELY 1 EMPLOYEE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a PROCESS TO ESTABLISH COMPENSATION OF TOP MANAGEMENT OFFICIAL</FormAndLineReferenceDesc>
        <ExplanationTxt>The President of Children's Medical Center Research Institute at the University of Texas Southwestern Medical Center (CMCRI) receives compensation according to a consulting agreement executed and under the authority of Children's Medical Center of Dallas (EIN 75-0800628). Michael Serber, an officer of CMCRI, is neither an employee of nor compensated by CMCRI. Mr. Serber is an employee of the University of Texas Southwestern Medical Center (UTSWMC). UTSWMC is not a related organization of CMCRI. Therefore, there is no compensation reported for Mr. Serber on CMCRI's Form 990. CMCRI'S Other Officers AND KEY EMPLOYEES ARE EMPLOYED AND COMPENSATED BY CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST). CHST IS THE SOLE MEMBER and common paying agent for those employees that are employed and compensated by CHST for the benefit of CMCRI. The CHST process for determining executive compensation is as follows: The Human Resources Committee (Committee) of the CHST Board is responsible for setting the compensation for executives. The Committee is comprised of independent, non-employee directors. A written compensation philosophy has been developed by the Human Resources Committee for timeliness and appropriateness and defines the desired peer groups for compensation surveys. COMPENSATION PROGRAM COMPONENTS: The elements of total compensation provided to CHST executives include: - Cash compensation (i.e., base salary, short-term and long-term incentive compensation, and/or other cash compensation), determined in consideration of competitive market practices, organizational and individual performance, recruitment and retention considerations, and other relevant factors. - Standard benefits, assisting in each executive's medical, dental, disability, life insurance, time off, and retirement needs, reflective of the employment status (i.e., full or part time) of the executive. - Supplemental benefits, including supplemental insurance, retirement benefits, and/or other supplemental benefits determined by the Committee to be appropriate and reasonable in relation to marketplace practices. Compensation and benefits decisions are made in consideration of each executive's position, responsibilities, skills, effort, and performance, in relation to documented practices within the appropriate comparator group(s). PEER GROUP: The Committee has defined its primary peer group for executives as not-for-profit health care organizations similar in size, structure, and complexity. This group will include leading pediatric health systems as well as integrated health systems and academic medical centers. - Data will be compiled in a manner consistent with the IRS Intermediate Sanctions rules of federal tax law, to reflect what is "ordinarily paid to like executives by like enterprises under like circumstances." - In certain circumstances, market data from additional comparator groups (e.g., research institutions, insurance industry, and general industry companies) may also be referenced. - The specific nature of the role at CHST will be considered when adding comparator groups outside of the primary peer group, and the Committee will discuss and agree on the appropriateness of adding comparator groups whenever the specific nature of the CHST role requires additional comparator groups to be used.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 4 Significant changes to organizational documents</FormAndLineReferenceDesc>
        <ExplanationTxt>Bylaws Amendments in 2016 are as follows: Preamble and Section 3.02 Identity - Updated "Children's Health Services of Texas" to "Children's Health System of Texas" to reflect the entity's current name Section 4.03 Number, Tenure, Election, and Vacancies; Section 4.04 Officers of the Board; and Section 6.05 Advisory Committees or Boards - Revised "CEO of Children's" to "CEO of CHST" to reflect the officer changes at Children's Medical Center of Dallas</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Children's Health System of Texas (CHST) is the sole member.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>Children's Health System of Texas and The University of Texas Southwestern Medical Center each appoint three of the seven voting directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Member reserve powers are specified in the organization's bylaws and represent those actions by the organization which require member approval. These powers generally encompass changes in the mission of the organization, addition of new members, certain dispositions of assets, amendments to the organization's Certificate of Formation and Bylaws, and appointment of directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>Children's Medical Center Research Institute at the University of Texas Southwestern Medical Center has delegated its oversight and review of the Form 990 to the Board of Directors of Children's Health System of Texas (CHST), its Sole Member. A draft of the Form 990 is presented to the CHST Audit Committee for review prior to filing. A copy of the Final Form 990 is made available to the CHST directors through our Board portal before it is filed.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>Officers, directors, and key employees received a copy of the Statement of Interest form to execute. Disclosures made are reviewed by the CHST Executive Vice President, Chief Legal Officer and General Counsel and the Chief Compliance Officer and discussed as necessary at the appropriate Board meeting to determine if further action is needed.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>Certificate of Formation and Consolidated Financial Statements are publicly available. The conflict of interest policy is made available to the public upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>Capital Support - CMCF - 104666;</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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        <DirectControllingEntityName>
          <BusinessNameLine1Txt>CHILDREN'S HEALTH SYSTEM OF TEXAS</BusinessNameLine1Txt>
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        <DirectControllingEntityName>
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        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>WOMEN'S AUXILIARY OF CMCD</BusinessNameLine1Txt>
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          <AddressLine1Txt>1935 MEDICAL DISTRICT DRIVE</AddressLine1Txt>
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          <ZIPCd>75235</ZIPCd>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>Children's BMG dba One Care Domain</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>Wellness Innovations Physician Partners</BusinessNameLine1Txt>
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        <DirectControllingEntityName>
          <BusinessNameLine1Txt>Wellness Innovations LLC</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHST Physician Group 1</BusinessNameLine1Txt>
        </DisregardedEntityName>
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          <CityNm>Dallas</CityNm>
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          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>813582843</EIN>
        <PrimaryActivitiesTxt>Physician</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>CHILDREN'S HEALTH SYSTEM OF TEXAS</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHST Physician Group 2</BusinessNameLine1Txt>
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          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>813679995</EIN>
        <PrimaryActivitiesTxt>Physician</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
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      <IdRelatedTaxExemptOrgGrp>
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          <AddressLine1Txt>1935 Medical District Drive</AddressLine1Txt>
          <CityNm>Dallas</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
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        <EIN>813691209</EIN>
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        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
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        <DirectControllingEntityName>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
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          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>814577909</EIN>
        <PrimaryActivitiesTxt>Physician</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
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          <AddressLine1Txt>1935 Medical District Drive</AddressLine1Txt>
          <CityNm>Dallas</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>814848085</EIN>
        <PrimaryActivitiesTxt>Physician</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
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      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHST Physician Group 6</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>1935 Medical District Drive</AddressLine1Txt>
          <CityNm>Dallas</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>814865847</EIN>
        <PrimaryActivitiesTxt>Physician</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>CHILDREN'S HEALTH SYSTEM OF TEXAS</BusinessNameLine1Txt>
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      </IdRelatedTaxExemptOrgGrp>
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        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Wellness Innovations LLC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>1935 Medical District Drive</AddressLine1Txt>
          <CityNm>Dallas</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>475246461</EIN>
        <PrimaryActivitiesTxt>Physicians</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <DirectControllingEntityName>
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        <RelatedOrganizationName>
          <BusinessNameLine1Txt>CHILDREN'S INSURANCE COMPANY</BusinessNameLine1Txt>
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        <USAddress>
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        <LegalDomicileStateCd>VT</LegalDomicileStateCd>
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        </DirectControllingEntityName>
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          <BusinessNameLine1Txt>ALTERNATIVE CARE SYSTEMS</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>1935 MEDICAL DISTRICT DRIVE</AddressLine1Txt>
          <CityNm>DALLAS</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
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          <AddressLine1Txt>1935 MEDICAL DISTRICT DRIVE</AddressLine1Txt>
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          <ZIPCd>75235</ZIPCd>
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        <EIN>471036641</EIN>
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        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <DirectControllingEntityName>
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        <RelatedOrganizationName>
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        <USAddress>
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          <CityNm>Dallas</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75235</ZIPCd>
        </USAddress>
        <EIN>475032893</EIN>
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        <LegalDomicileStateCd>TX</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>Children's Health System of Texas</BusinessNameLine1Txt>
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          <CountryCd>CJ</CountryCd>
          <ForeignPostalCd>KY11202</ForeignPostalCd>
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        <EIN>981318151</EIN>
        <PrimaryActivitiesTxt>Self-insurance</PrimaryActivitiesTxt>
        <LegalDomicileForeignCountryCd>CJ</LegalDomicileForeignCountryCd>
        <DirectControllingEntityName>
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      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>true</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>true</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
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      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>true</TransferFromOtherOrgInd>
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  </ReturnData>
</Return>