title: An examination of repeated heroin abuse by patients maintained on methadone.
mesh_terms: D000328:Adult; D003258:Consumer Behavior; D003376:Counseling; D006556:Heroin Dependence / Q000188:drug therapy*; D006801:Humans; D008691:Methadone / Q000627:therapeutic use*; D010352:Patient Dropouts; D012047:Rehabilitation Centers; D012189:Retrospective Studies; D019966:Substance-Related Disorders; D014481:United States
chemical_list: D008691:Methadone