High-risk sexual behavior by HIV-positive men who have sex with men--16 sites, United States, 2000-2002.
D000328:Adult; D017280:Condoms / Q000706:statistics & numerical data*; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D014481:United States / Q000453:epidemiology