Effectiveness of condom use in preventing HIV infection in prostitutes.
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D003275:Contraceptive Devices, Male; D005260:Female; D006115:Greece; D006679:HIV Seropositivity / Q000453:epidemiology; D006801:Humans; D008297:Male; D011477:Sex Work