title: Peer counselors key for hardest-to-reach groups?
mesh_terms: D002487:Centers for Disease Control and Prevention, U.S.; D018672:Community Health Planning; D003275:Contraceptive Devices, Male / Q000600:supply & distribution; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000517:prevention & control; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D010379:Peer Group; D012307:Risk Factors; D011477:Sex Work; D015819:Substance Abuse, Intravenous; D014481:United States / Q000453:epidemiology