title: HIV infection in intravenous drug users: a follow-up study indicating changes in risk-taking behaviour.
authors.forename: J R
authors.initials: JR
authors.lastname: Robertson
authors.forename: C A
authors.initials: CA
authors.lastname: Skidmore
authors.forename: J J
authors.initials: JJ
authors.lastname: Roberts
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000523:psychology; D005260:Female; D005500:Follow-Up Studies; D006679:HIV Seropositivity; D006556:Heroin Dependence / Q000523:psychology*; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D009339:Needles; D011446:Prospective Studies; D012307:Risk Factors; D012725:Sexual Behavior; D006113:United Kingdom