1)Boku N, et al:Randomized phase III study of 5-fluorouracil (5-FU) alone versus combination of irinotecan and cisplatin (CP) versus S-1 alone in advanced gastric cancer (JCOG9912). Pro Am Sci Clin Oncol 25:4513, 2007
2)Koizumi W, et al:Randomized phase III study of S-1 alone versus S-1 + cisplatin in the treatment for advanced gastric cancer (The SPIRITS trial) SPIRITS;S-1 plus cisplatin vs S-1 in RCT in the treatment for stomach cancer. Lancet Oncol 9:215-221, 2008
3)Sakuramoto S, et al:Adjuvant chemotherapy for gastric cancer with S-1, an oral fluoropyrimidine. N Engl J Med 357:1810-1820, 2007