Messenger more important than message in HIV prevention.
D001741:Black or African American; D005260:Female; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006266:Health Education; D006801:Humans; D008297:Male; D008396:Maryland; D009316:National Institutes of Health (U.S.); D012309:Risk-Taking; D012736:Sex Education; D012725:Sexual Behavior; D019966:Substance-Related Disorders / Q000517:prevention & control; D014481:United States