Rectal gonorrhoea as an independent risk factor for HIV infection in homosexual males.
D000293:Adolescent; D000328:Adult; D017280:Condoms; D015658:HIV Infections / Q000635:transmission*; D006679:HIV Seropositivity; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012002:Rectal Diseases / Q000150:complications; D012189:Retrospective Studies; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000150:complications*