title: Follow up study of sexually transmitted disease (STD), sexual practice and human immunodeficiency virus (HIV) serology in homosexual men attending an STD clinic.
mesh_terms: D005500:Follow-Up Studies; D006679:HIV Seropositivity; D006716:Homosexuality; D006801:Humans; D008297:Male; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000635:transmission*