1)Valle J, et al:Cisplatin plus gemcitabine versus gemcitabine for biliary tract cancer. N Engl J Med 362:1273-1281, 2010
2)Okusaka T, et al:Gemcitabine alone or in combination with cisplatin in patients with biliary tract cancer:a comparative multicentre study in Japan. Br J Cancer 103:469-474, 2010
3)Suzuki E, et al:A multicenter phase Ⅱ study of S-1 in gemcitabine-refractory biliary tract cancer. J Clin Oncol 28(supple):336s(abstr 4145), 2010
4)Takashima A, et al:Randomized phase Ⅱ study of gemcitabine plus S-1 combination therapy vs. S-1 in advanced biliary tract cancer:Japan Clinical Oncology Group Study(JCOG0805). Jpn J Clin Oncol 40:1189-1191, 2010
5)Valle JW, et al:Gemcitabine alone or in combination with cisplatin in patients with advanced or metastatic cholangiocarcinomas or other biliary tract tumours:a multicentre randomised phase Ⅱ study-The UK ABC-01 Study. Br J Cancer 101:621-627, 2009
6)Okusaka T, et al:Phase Ⅱ study of single-agent gemcitabine in patients with advanced biliary tract cancer. Cancer Chemother Pharmacol 57:647-653, 2006
7)Furuse J, et al:S-1 monotherapy as first-line treatment in patients with advanced biliary tract cancer:a multicenter phase Ⅱ study. Cancer Chemother Pharmacol 62:849-855, 2008
8)Sasaki T, et al:Multicenter, phase Ⅱ study of gemcitabine and S-1 combination chemotherapy in patients with advanced biliary tract cancer. Cancer Chemother Pharmacol 65:1101-1107, 2010