Proc Am Soc Clin Oncol,2003,22:288(abstr.First-line treatment of patients with metastatic pancreatic cancer:results of a Phase Ⅱ trial with S-1(CESAR-Study group)Int J Clin Pharmacol Ther,2010,48:470-472 .Randomized phase Ⅲ trial of gemcitabine plus cispl ......