Needle exchange.
Baker
R
R
Bowers
M
M
D006077:Government Agencies; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission*; D006801:Humans; D015994:Incidence; D018671:Needle-Exchange Programs / Q000592:standards*; D015397:Program Evaluation; D015819:Substance Abuse, Intravenous; D014481:United States / Q000453:epidemiology