title: Reducing benzodiazepine self-administration with contingent reinforcement.
mesh_terms: D000328:Adult; D003975:Diazepam / Q000652:urine; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D009293:Opioid-Related Disorders / Q000534:rehabilitation; D012646:Self Administration; D019966:Substance-Related Disorders / Q000534:rehabilitation*; D014040:Token Economy
chemical_list: D003975:Diazepam; D008691:Methadone