title: Learning to recognize scarring among intravenous drug users: a tool for HIV risk reduction.
authors.forename: H W
authors.initials: HW
authors.lastname: Horowitz
mesh_terms: D002921:Cicatrix; D015658:HIV Infections / Q000517:prevention & control*; D006266:Health Education; D006801:Humans; D015819:Substance Abuse, Intravenous