title: Exchanging ideas.
authors.forename: J
authors.initials: J
authors.lastname: Lyall
mesh_terms: D004739:England; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D007391:International Cooperation; D015819:Substance Abuse, Intravenous / Q000150:complications*; D014481:United States