Condom use.
Sonenstein
F L
FL
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control; D000293:Adolescent; D000328:Adult; D003275:Contraceptive Devices, Male; D005260:Female; D006801:Humans; D008297:Male; D012736:Sex Education; D012725:Sexual Behavior; D014481:United States