^○Kota Nakamura¹, Sohei Satoi², Hisashi Kosaka², Takahiro Akahori¹, Minako Nagai¹, Satoshi Nishiwada¹, Kenji Nakagawa¹, Tomohisa Yamamoto², Hiroaki Yanagimoto², Satoshi Hirooka², So Yamaki², Masaya Kotsuka², Naoya Ikeda¹, Masayuki Sho¹ (1.Department of Surgery, Nara Medical University, Nara, Japan, 2.Department of Surgery, Kansai Medical University, Hirakata, Osaka)

^○Yuki Mochida, Akira Mori, Akio Nakajima, Akira Arimoto (Department of Surgery, Osaka Red Cross Hospital, Osaka, Japan)

^○Shigenori Ei, Hiroshi Tajima, Nobuyuki Nishizawa, Takashi Kaizu, Yusuke Kumamoto, Masahiko Watanabe (Department of Surgery, Kitasato University, Tokyo, Japan)

^○Yoshihiro Miyazaki, Tatsuya Oda, Osamu Shimomura, Kazuhisa Araki, Kazuhiro Takahashi, Yukio Oshiro, Masanao Kurata, Nobuhiro Ohkohchi (Department of Surgery, Clinical Sciences, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.)

^○Daisuke Imai, Takashi Maeda, Kensaku Sanefuji (Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital)

^○Akimori Miki, Yoichiro Uchida, Ryo Ono, Kentaro Kadono, Tomohiro Okamoto, Ryo Kamimura, Masashi Horiguchi, Hiroaki Terajima (Department of Gastroenterological Surgery and Oncology, The Tazuke Kofukai, Medical Reserch Institute, Kitano Hospital)