title: Extent of drug abuse: an international review with implications for health planners.
mesh_terms: D001463:Barbiturates; D002186:Cannabinoids; D014943:Global Health; D006213:Hallucinogens; D006285:Health Planning; D006801:Humans; D007391:International Cooperation; D009294:Narcotics; D019966:Substance-Related Disorders / Q000453:epidemiology*
chemical_list: D001463:Barbiturates; D002186:Cannabinoids; D006213:Hallucinogens; D009294:Narcotics