The impact of AIDS on the voluntary blood donor system: a preliminary analysis.
D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D000368:Aged; D001771:Blood Banks; D001782:Blood Donors / Q000523:psychology*; D001803:Blood Transfusion; D003142:Communication; D006467:Hemophilia A / Q000635:transmission; D006801:Humans; D012011:Red Cross; D012621:Seasons; D014481:United States; D014838:Volunteers / Q000523:psychology