International challenge of drug abuse: a perspective from the United States.
D004335:Drug and Narcotic Control; D006801:Humans; D013287:Illicit Drugs; D007391:International Cooperation; D012922:Social Change; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000523:psychology* / Q000534:rehabilitation; D014481:United States
D013287:Illicit Drugs