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        <Desc>OTHER SECURITIES</Desc>
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        <ExplanationTxt>THE ASSOCIATION HAS ADOPTED GUIDANCE ON ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES. AFTER EVALUATING THE TAX POSITIONS TAKEN, NONE ARE CONSIDERED TO BE UNCERTAIN; THEREFORE, NO AMOUNTS HAVE BEEN RECOGNIZED AS OF DECEMBER 31, 2018 AND 2017. THE ASSOCICATION IS NO LONGER SUBJECT TO U.S. FEDERAL INCOME TAX EXAMINATIONS FOR YEARS PRIOR TO 2015.</ExplanationTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>THE IASLC OFFERS A VARIETY OF TRAVEL AWARDS TO HELP RESEARCHERS FROM AROUND THE WORLD ATTEND THE ANNUAL IASLC WORLD CONFERENCE ON LUNG CANCER. APPLICATIONS ARE ACCEPTED EACH YEAR, AND THE WINNERS ARE DETERMINED BY AN INTERNATIONAL MULTIDISCIPLINARY REVIEW COMMITTEE COMPRISED OF IASLC MEMBERS.</TypeOfAssistanceTxt>
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      <ForeignIndividualsGrantsGrp>
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        <TypeOfAssistanceTxt>THE IASLC OFFERS A VARIETY OF TRAVEL AWARDS TO HELP RESEARCHERS FROM AROUND THE WORLD ATTEND THE ANNUAL IASLC WORLD CONFERENCE ON LUNG CANCER. APPLICATIONS ARE ACCEPTED EACH YEAR, AND THE WINNERS ARE DETERMINED BY AN INTERNATIONAL MULTIDISCIPLINARY REVIEW COMMITTEE COMPRISED OF IASLC MEMBERS.</TypeOfAssistanceTxt>
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        <FormAndLineReferenceDesc>PART I, LINE 3:</FormAndLineReferenceDesc>
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        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>PIA HIRSCH, DIRECTOR OF EDUCATION AND FRED HIRSCH, FORMER CEO, MD, PHD, ARE SPOUSES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FOR 2018, THE CEO &amp; CFO WILL REVIEW THE RETURN PRIOR TO THE FILING OF FORM 990. THE TAX RETURN WILL BE AVAILABLE TO THE BOARD AND FINANCE COMMITTEE FOR REVIEW FOLLOWING THE FILING OF FORM 990.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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