title: Methadone maintenance programs.
mesh_terms: D001007:Anxiety; D003415:Crime; D003932:Heroin / Q000652:urine; D006556:Heroin Dependence / Q000188:drug therapy; D006801:Humans; D007878:Legislation as Topic; D008691:Methadone / Q000008:administration & dosage / Q000506:poisoning / Q000627:therapeutic use*; D009042:Motivation; D013375:Substance Withdrawal Syndrome / Q000517:prevention & control; D019966:Substance-Related Disorders / Q000188:drug therapy*; D013997:Time Factors; D014481:United States
chemical_list: D003932:Heroin; D008691:Methadone