^○Takaya Tokuhara, Eiji Nakata, Toshiyuki Tenjo, Isao Kawai, Keisuke Inoue, Mariko Araki, Hirohumi Ueda (Dept. of Surgery, Ootori Icho Hospital, Osaka, Japan)

^○Masashi Hirota¹, Kiyokazu Nakajima², Tsuyoshi Takahashi², Yukinori Kurokawa², Yasuhiro Miyazaki², Hiroshi Miyata², Syuji Takiguchi², Toshiro Nishida³, Masaki Mori², Yuichiro Doki² (1.Dept. of Surgery, Toyonaka Municipal Hospital, Osaka, Japan, 2.Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan, 3.National Cancer Center Hospital East)

^○Taiga Chiyo¹, Hideki Kobara¹, Hirohito Mori¹, Yasuhiro Goda¹, Shintaro Fujihara¹, Tae Matsunaga¹, Noriko Nishiyama¹, Maki Ayaki¹, Tatsuo Yachida¹, Tsutomu Masaki¹, Makoto Oryu² (1.Dept. of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, 1750-1 Ikenobe, Miki, Kita, Kagawa 761-0793, Japan, 2.Kagawa Saiseikai Hospital gastroenterology)

^○HIrofumi Kawakubo¹, Hiroya Takeuchi¹, Osamu Goto², Rieko Nakamura², Tsunehiro Takahashi¹, Norihito Wada¹, Yoshiro Saikawa¹, Naohisa Yahagi², Yuko Kitagawa¹ (1.Dept. of Surgery, Keio University School of Medicine, Tokyo, Japan, 2.Tumor center, Keio University School of Medicine)