title: Social context of risk behaviours.
authors.forename: G
authors.initials: G
authors.lastname: Hart
mesh_terms: D015658:HIV Infections / Q000523:psychology / Q000635:transmission*; D006801:Humans; D012309:Risk-Taking; D012919:Social Behavior; D015819:Substance Abuse, Intravenous / Q000150:complications*