Community-based organizations successful at teen risk reduction.
D000293:Adolescent; D000294:Adolescent Behavior; D003153:Community Health Services; D017280:Condoms / Q000706:statistics & numerical data*; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D040242:Risk Reduction Behavior; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission