title: The epidemiology of drug abuse: current issues. Program gaps and future direction.
mesh_terms: D000428:Alcohol Drinking; D003042:Cocaine; D004812:Epidemiologic Methods; D006801:Humans; D009316:National Institutes of Health (U.S.); D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000628:therapy; D014481:United States
chemical_list: D003042:Cocaine