Risk, HIV and STD prevention.
Gibson
Paul
P
D017280:Condoms; D004198:Disease Susceptibility; D005260:Female; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D008297:Male; D012307:Risk Factors; D012747:Sexual Partners; D012749:Sexually Transmitted Diseases / Q000517:prevention & control* / Q000635:transmission