title: Changing trends in drug use: an initial follow-up of a local heroin using community.
authors.forename: A
authors.initials: A
authors.lastname: Fraser
authors.forename: M
authors.initials: M
authors.lastname: George
mesh_terms: D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D012926:Social Control, Formal; D006113:United Kingdom