title: Distribution of opium coupons to addicts in Iran: policies and problems.
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence*; D005260:Female; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D009313:National Health Programs / Q000458:organization & administration*; D009293:Opioid-Related Disorders / Q000453:epidemiology / Q000534:rehabilitation*; D009892:Opium / Q000600:supply & distribution*; D019966:Substance-Related Disorders / Q000517:prevention & control*
chemical_list: D009892:Opium