Phase II trial of S-1 for elderly patients over 75 years with advanced gastric cancer as first-line treatment（OGSG0404）

Gotoh, H. Takiuchi, H. Imamura, Y. Kimura, T.Morimoto, M. Imano, S.Iijima, K.Yamashita, M.Matsuoka, K.Maruyama, H. Furukawa.(2009).Phase II trial of S-1 for elderly patients over 75 years with advanced gastric cancer as first-line treatment ：OGSG0404. ESMO 2009.