title: Changing patterns of drug dependence in two WHO regions: second WHO interregional workshop on prevention and treatment of drug dependence.
mesh_terms: D001210:Asia, Southeastern; D003226:Congresses as Topic; D003365:Costs and Cost Analysis; D004335:Drug and Narcotic Control / Q000379:methods; D006801:Humans; D009892:Opium / Q000600:supply & distribution; D010139:Pacific Islands; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000517:prevention & control*; D014944:World Health Organization
chemical_list: D009892:Opium