Prevention. Needle-exchange programs effective in New York City.
Jarlais
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Chemical Dependency Institute, Beth Israel Medical Center, New York, USA.
D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control*; D015528:HIV Seroprevalence; D006801:Humans; D018671:Needle-Exchange Programs / Q000592:standards*; D009519:New York City / Q000453:epidemiology; D015397:Program Evaluation