title: Basic issues pertaining to the effectiveness of methadone maintenance treatment.
mesh_terms: D003376:Counseling; D003416:Criminal Law; D006556:Heroin Dependence / Q000523:psychology / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D014481:United States
chemical_list: D008691:Methadone