We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEvaluating needle exchange: do distributed needles come back?AuthorsGuydish J; Clark G; Garcia D; Downing M; Case P; Sorensen JLPublicationAmerican journal of public health, 1991, Vol 81, Issue 5, p617ISSN0090-0036Publication typearticleDOI10.2105/ajph.81.5.617