Update: revised Public Health Service definition of persons who should refrain from donating blood and plasma--United States.
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D001782:Blood Donors; D006801:Humans; D008297:Male; D012306:Risk; D012725:Sexual Behavior; D014481:United States; D014486:United States Food and Drug Administration