title: Assessment of HIV risk outcomes in clinical trials for substance abuse pharmacology.
authors.forename: M
authors.initials: M
authors.lastname: Beckson
authors.forename: M
authors.initials: M
authors.lastname: Schaefer
mesh_terms: D015658:HIV Infections / Q000209:etiology*; D006801:Humans; D012306:Risk; D012725:Sexual Behavior; D019966:Substance-Related Disorders / Q000150:complications* / Q000188:drug therapy