title: HIV/age of first sexual encounter.
authors.forename: J
authors.initials: J
authors.lastname: Adams
authors.forename: L S
authors.initials: LS
authors.lastname: Friedman
authors.forename: V
authors.initials: V
authors.lastname: Mason
authors.forename: L
authors.initials: L
authors.lastname: Rice
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D000367:Age Factors; D003075:Coitus; D015658:HIV Infections; D006801:Humans; D012307:Risk Factors; D012309:Risk-Taking; D012725:Sexual Behavior; D012747:Sexual Partners; D015819:Substance Abuse, Intravenous