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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AAST FOLLOWS THE FINANCIAL ACCOUNTING STANDARDS BOARD REQUIREMENTS FOR ACCOUNTING FOR UNCERTAIN TAX POSITIONS AND HAS DETERMINED THEY ARE NOT REQUIRED TO RECORD A LIABIITY FOR ANY SUCH POSITIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>AAST HAS DELEGATED THE MANAGEMENT OF ITS DAILY OPERATIONS TO SMITHBUCKLIN CORPORATION IN CHICAGO. SMITHBUCKLIN CORPORATION IS A MANAGEMENT COMPANY WHICH MANAGES ALL ASPECTS OF THE ASSOCIATION IN ACCORDANCE WITH THE ASSOCIATION'S BYLAWS AND POLICIES. OPERATIONS MAY INCLUDE, BUT ARE NOT LIMITED TO, ADMINISTRATION, MEMBERSHIP, FINANCE AND ACCOUNTING, CONVENTION/TRADESHOW/MEETING PLANNING, EDUCATION, MARKETING, INFORMATION TECHNOLOGY AND GOVERNMENT RELATIONS. SMITHBUCKLIN CORPORATION EMPLOYEES PROVIDE THESE SERVICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AAST HAS FOUR CATEGORIES OF MEMBERS: REGULAR, STUDENT, HONORARY AND EMERITUS. REGULAR MEMBERS CONSIST OF HEALTHCARE PROFESSIONALS WHO ARE PRIMARILY EMPLOYED OR CREDENTIALED IN THE AREA OF SLEEP MEDICINE OR TECHNOLOGY. STUDENT MEMBERS CONSIST OF INDIVIDUALS ENROLLED IN A FORMAL TRAINING PROGRAM FOR SLEEP MEDICINE OR TECHNOLOGY AND MAY REMAIN AS SUCH FOR THE LENGTH OF THEIR EDUCATIONAL PROGRAM. HONORARY MEMBERS CONSIST OF PERSONS ACCORDED SUCH MEMBERSHIP STATUS BY THE UNANIMOUS VOTE OF THE BOARD OF DIRECTORS, FOR SPECIAL SERVICE TO THE FIELD OF SLEEP TECHNOLOGY OR AAST. EMERITUS MEMBERS CONSIST OF INDIVIDUALS WHO HAVE BEEN REGULAR MEMBERS FOR AT LEAST FIFTEEN YEARS AND ARE RETIRED PROFESSIONALLY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS IS ELECTED BY A VOTE OF AAST'S REGULAR AND EMERITUS MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>AMENDMENTS TO BYLAWS MUST BE APPROVED BY A VOTE OF AAST'S REGULAR AND EMERITUS MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PREPARED BY INDEPENDENT PUBLIC ACCOUNTANTS AND SUBMITTED TO THE ASSOCIATION'S MANAGEMENT COMPANY FOR INITIAL REVIEW. THE FORM IS THEN SUBMITTED TO THE BOARD OF DIRECTORS FOR REVIEW AND DISCUSSION PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY IS REVIEWED ON A REGULAR BASIS AT BOARD MEETINGS. IN ADDITION, BOARD MEMBERS ARE REQUIRED TO DISCLOSE POTENTIAL CONFLICTS OF INTEREST ON A WRITTEN CONFLICT OF INTEREST STATEMENT AND RECUSE THEMSELVES FROM IDENTIFIED CONFLICTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AAST'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE FOR PUBLIC INSPECTION UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>EDUCATIONAL SUPPORT 66,427. OTHER 42,270.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>AAST'S FINANCE COMMITTEE IS RESPONSIBLE FOR THE OVERSIGHT OF THE AUDIT AND SELECTION OF AN INDEPENDENT ACCOUNTANT. THIS PROCESS IS CONSISTENT WITH PRIOR YEARS.</ExplanationTxt>
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</Return>
