title: Preventing the spread of HIV infection.
authors.forename: N
authors.initials: N
authors.lastname: O'Farrell
mesh_terms: D005260:Female; D006069:Gonorrhea / Q000635:transmission; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D008131:London; D008297:Male; D012725:Sexual Behavior