1. Tumors of the biliary tree and pancreas;Imrie,1979
2. Diseases of the gallbladder and bile ducts;Tan,1982
3. Malignant papillomatosis of the intrahepatic bile ducts;Helpap;Acta Hepato-Gastroenterol,1977
4. Polypoid epithelial tumors of the bile ducts;Cattell;N Engl J Med,1962
5. Benign tumors of the gallbladder;Ochsner;Gastroenterology,1956