692PThe difference of risk factor for gastric cancer surgery between elderly and non-elderly patients. (23rd October 2018) - Hayashi, T; Oshima, T; Hara, K; Shimoda, Y; Nakazono, M; Nagasawa, S; Kumazu, Y; Yamada, T; Rino, Y; Masuda, M; Ogata, T; Yoshikawa, T