title: Changes in needle sharing and syringe cleaning among San Francisco drug abusers.
authors.forename: J L
authors.initials: JL
authors.lastname: Sorensen
authors.forename: J
authors.initials: J
authors.lastname: Guydish
authors.forename: M
authors.initials: M
authors.lastname: Costantini
authors.forename: S L
authors.initials: SL
authors.lastname: Batki
mesh_terms: D004203:Disinfection; D006801:Humans; D006920:Hygiene; D007275:Injections, Intravenous; D009339:Needles; D012495:San Francisco; D019966:Substance-Related Disorders; D013594:Syringes