1. Chronic hepatitis;Maddrey,1990
2. A classification of chronic hepatitis;DeGroote;Lancet,1968
3. Classification and treatment of chronic active liver disease;Geall;Gastroenterology,1968
4. Morphological criteria in viral hepatitis;Bianchi,1971
5. Percutaneous needle biopsy of the liver;Maddrey,1991