title: Social events and narcotic addiction: the influence of war and law on opium use in Laos.
mesh_terms: D004335:Drug and Narcotic Control; D006556:Heroin Dependence / Q000191:economics / Q000453:epidemiology; D006801:Humans; D007812:Laos; D009294:Narcotics / Q000600:supply & distribution; D009892:Opium / Q000600:supply & distribution; D012036:Refugees; D012922:Social Change; D019966:Substance-Related Disorders / Q000191:economics / Q000453:epidemiology*; D014171:Transients and Migrants; D014857:Warfare
chemical_list: D009294:Narcotics; D009892:Opium