Drinking water and liver cell cancer: an epidemiologic approach to the etiology of this disease in China.
D002681:China; D004812:Epidemiologic Methods; D006801:Humans; D008113:Liver Neoplasms / Q000453:epidemiology / Q000209:etiology*; D014877:Water Pollution, Chemical / Q000032:analysis; D014881:Water Supply / Q000032:analysis