title: Working-class opium eating in the nineteenth century: establishing the facts.
mesh_terms: D000328:Adult; D002648:Child; D005260:Female; D049672:History, 19th Century; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009892:Opium / Q000266:history*; D012923:Social Class; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000266:history*; D006113:United Kingdom
chemical_list: D009892:Opium