title: PEP program begins in San Francisco.
authors.forename: L
authors.initials: L
authors.lastname: Highleyman
mesh_terms: D002986:Clinical Trials as Topic; D004359:Drug Therapy, Combination; D015658:HIV Infections / Q000188:drug therapy / Q000517:prevention & control*; D006801:Humans; D018579:Patient Selection; D012495:San Francisco; D013997:Time Factors