1. 1. Ohtsuka M, Ito H, Kimura F, Shimizu H, Togawa A, Yoshidome H, Miyazaki M. Results of surgical treatment for intrahepatic cholangiocarcinoma and clinicopathological factors influencing survival. Br J Surg. 2002; 89:1525-1531.
2. 2. Khan SA, Davidson BR, Goldin R, Pereira SP, Rosenberg WM, Taylor-Robinson SD, Thillainayagam AV, Thomas HC, Thursz MR, Wasan H; British Society of Gastroenterology. Guidelines for the diagnosis and treatment of cholangiocarcinoma: Consensus document. Gut. 2002; 51 Suppl 6:VI1-9.
3. 3. Glimelius B, Hoffman K, Sjödén PO, Jacobsson G, Sellström H, Enander LK, Linné T, Svensson C. Chemotherapy improves survival and quality of life in advanced pancreatic and biliary cancer. Ann Oncol. 1996; 7:593-600.
4. 4. Mazhar D, Stebbing J, Bower M. Chemotherapy for advanced cholangiocarcinoma: What is standard treatment? Future Oncol. 2006; 2:509-514.
5. 5. Ueno H, Okusaka T, Ikeda M, Takezako Y, Morizane C. Phase II study of S-1 in patients with advanced biliary tract cancer. Br J Cancer. 2004; 91:1769-1774.