title: Decreasing frequency, with time, of hepatitis B surface antigen positive liver biopsy in hepatitis, cirrhosis, and hepatocellular carcinoma.
mesh_terms: D001706:Biopsy; D006528:Carcinoma, Hepatocellular / Q000276:immunology*; D006505:Hepatitis / Q000276:immunology*; D006509:Hepatitis B / Q000453:epidemiology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D008099:Liver / Q000276:immunology*; D008103:Liver Cirrhosis / Q000276:immunology*; D008113:Liver Neoplasms / Q000276:immunology*
chemical_list: D006514:Hepatitis B Surface Antigens