title: Measuring effectiveness of needle and syringe exchange programmes for prevention of HIV among injecting drug users.
authors.forename: Ellen J
authors.initials: EJ
authors.lastname: Amundsen
mesh_terms: D005060:Europe / Q000453:epidemiology; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D016485:Needle Sharing / Q000639:trends; D018671:Needle-Exchange Programs / Q000592:standards*; D015397:Program Evaluation; D015819:Substance Abuse, Intravenous / Q000150:complications* / Q000453:epidemiology