Anal warts in a population of gay men in New York City.
D000328:Adult; D001005:Anus Neoplasms / Q000150:complications / Q000453:epidemiology*; D003218:Condylomata Acuminata / Q000150:complications / Q000453:epidemiology*; D006069:Gonorrhea / Q000150:complications; D006716:Homosexuality; D006801:Humans; D008297:Male; D012725:Sexual Behavior