Risk behavior change in gay men.
Kelly
J A
JA
St Lawrence
J S
JS
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D006716:Homosexuality / Q000523:psychology*; D006801:Humans; D008297:Male; D012309:Risk-Taking; D012725:Sexual Behavior; D014481:United States / Q000453:epidemiology