title: Ethnography and the evaluation of needle exchange in the prevention of HIV transmission.
authors.forename: M
authors.initials: M
authors.lastname: Singer
authors.forename: N
authors.initials: N
authors.lastname: Romero-Daza
authors.forename: M
authors.initials: M
authors.lastname: Weeks
authors.forename: P
authors.initials: P
authors.lastname: Pelia
mesh_terms: D003237:Connecticut / Q000453:epidemiology; D004812:Epidemiologic Methods; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission*; D006801:Humans; D018671:Needle-Exchange Programs; D015397:Program Evaluation; D015819:Substance Abuse, Intravenous / Q000523:psychology