Hepatocellular cancer: differences between high and low incidence regions.
D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors