title: Maintenance treatment of narcotic addicts (not British nor a system, but working now).
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D044383:Black People; D003415:Crime; D004651:Employment; D005006:Ethnicity; D005191:Family Characteristics; D005260:Female; D005500:Follow-Up Studies; D003932:Heroin / Q000627:therapeutic use; D006556:Heroin Dependence / Q000517:prevention & control; D006801:Humans; D006993:Hypnotics and Sedatives / Q000009:adverse effects; D007182:Income; D008131:London; D008297:Male; D008393:Marriage; D008691:Methadone / Q000627:therapeutic use; D008694:Methamphetamine / Q000627:therapeutic use; D008875:Middle Aged; D010044:Outpatient Clinics, Hospital; D012923:Social Class; D012925:Social Conformity; D019966:Substance-Related Disorders / Q000188:drug therapy / Q000453:epidemiology / Q000534:rehabilitation*; D006113:United Kingdom
chemical_list: D006993:Hypnotics and Sedatives; D008694:Methamphetamine; D003932:Heroin; D008691:Methadone