Survey of addicts prescribed heroin at London clinics.
D000293:Adolescent; D000328:Adult; D011307:Drug Prescriptions; D004812:Epidemiologic Methods; D005260:Female; D003932:Heroin; D006760:Hospitalization; D006801:Humans; D007182:Income; D008131:London; D008297:Male; D008875:Middle Aged; D009021:Morphine Dependence / Q000188:drug therapy / Q000453:epidemiology / Q000628:therapy; D009790:Occupations; D012651:Self Medication; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders / Q000453:epidemiology
D003932:Heroin