Strathdee, S A Needle exchange is not enough: lessons from the Vancouver injecting drug use study. [electronic resource] - AIDS (London, England) Jul 1997 - F59-65 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0269-9370 Standard No.: 10.1097/00002030-199708000-00001 doi Subjects--Topical Terms: AdolescentAdultCanada--epidemiologyCohort StudiesFemaleFollow-Up StudiesHIV Infections--complicationsHumansIncidenceMaleMiddle AgedNeedle-Exchange ProgramsProspective StudiesRisk-TakingSubstance Abuse, Intravenous--complications