HIV and AIDS. Safer sex.
Barton
S
S
John Hunter Clinic, London.
D003376:Counseling / Q000379:methods; D005194:Family Practice; D005260:Female; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D008297:Male; D012307:Risk Factors; D012725:Sexual Behavior