title: The clinical usefulness of narcotic antagonists: implications of behavioral research.
mesh_terms: D000359:Aftercare; D001521:Behavior Therapy; D003216:Conditioning, Operant; D003496:Cyclazocine / Q000627:therapeutic use; D005108:Extinction, Psychological; D003932:Heroin; D006556:Heroin Dependence / Q000534:rehabilitation*; D006760:Hospitalization; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D009270:Naloxone / Q000627:therapeutic use; D009271:Naltrexone / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D010352:Patient Dropouts; D012054:Reinforcement, Psychology; D012107:Research Design; D012647:Self-Assessment
chemical_list: D009292:Narcotic Antagonists; D009270:Naloxone; D009271:Naltrexone; D003932:Heroin; D003496:Cyclazocine; D008691:Methadone