HIV/age of first sexual encounter.
Adams
J
J
Friedman
L S
LS
Mason
V
V
Rice
L
L
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