title: Heroin maintenance clinics: does the "British System" have answers for U.S. addiction treatment shortcomings?
mesh_terms: D006556:Heroin Dependence / Q000188:drug therapy* / Q000453:epidemiology; D006801:Humans; D008131:London; D008691:Methadone / Q000627:therapeutic use*; D012046:Rehabilitation / Q000592:standards*; D012047:Rehabilitation Centers / Q000592:standards; D014481:United States
chemical_list: D008691:Methadone