Social problems of drug use and drug policies.
D000293:Adolescent; D000328:Adult; D002648:Child; D004335:Drug and Narcotic Control / Q000592:standards*; D006801:Humans; D007880:Legislation, Drug / Q000592:standards*; D012940:Social Problems; D019966:Substance-Related Disorders / Q000453:epidemiology; D009626:Terminology as Topic; D014481:United States