Preventing the spread of HIV infection.
French
P D
PD
Mercey
D E
DE
Tomlinson
D R
DR
Harris
J R
JR
D006069:Gonorrhea / Q000635:transmission*; D015658:HIV Infections / Q000517:prevention & control*; D007722:Health Knowledge, Attitudes, Practice; D006716:Homosexuality; D006801:Humans; D008131:London; D008297:Male; D012725:Sexual Behavior