Heroin maintenance and heroin control.
D001291:Attitude of Health Personnel; D002961:Civil Rights; D003365:Costs and Cost Analysis; D003415:Crime; D011307:Drug Prescriptions; D004335:Drug and Narcotic Control; D003932:Heroin / Q000008:administration & dosage* / Q000600:supply & distribution; D006556:Heroin Dependence / Q000453:epidemiology / Q000628:therapy*; D006801:Humans; D007880:Legislation, Drug; D008691:Methadone / Q000627:therapeutic use; D011330:Prisons; D006113:United Kingdom; D014481:United States
D003932:Heroin; D008691:Methadone