^○Yasuhide Kofunato, Ausushi Nishimagi, Shigeyuki Tsukita, Seiko Suzushino, Makoto Muto, Junichiro Watanabe, Naoya Sato, Teruhide Ishigame, Ryo Okada, Takashi Kimura, Akira Kenjo, Tatsuo Shimura, Shigeru Marubashi (Department of Hepato-Biliary-pancreatic and Transplant Surgery, Fukushima Medical University, Fukushima, Japan)

^○Chien-Hung Liao (Department of General Surgery, Division of Trauma and Emergency Surgery Chang Gung Memorial Hospital, Linkou)

^○Takumi Harada, Naokuni Tatsumoto, Takeshi Kobayashi, Hiroyuki Naito, Keisuke Okano, Toshinori Hirano, Kenta Baba (Department of Surgery, Miyoshi Central Hospital ,Japan)

^○Yuta Ogura, Jun Ishida, Kenrou Hirata, Takeshi Iwasaki (Department of Surgery, National Hospital Organization Kobe Medical Center, Hyogo, Japan)

^○Ayano Inoue, Takehiro Noji, Yositsugu Nakanishi, Toshimichi Asano, Yo Kurashima, Yuma Ebihara, Soichi Murakami, Toru Nakamura, Takahiro Tsuchikawa, Keisuke Okamura, Toshiaki Shichinohe, Satoshi Hirano (Department of Gastroenterological SurgeryII, Graduate School of Medicine, Hokkaido University, Sapporo, Japan)

^○Hiroaki Nakanuma, Teijiro Hirashita, Kazuhiro Tada, Kunihiro Saga, Hiroomi Takayama, Yuichi Endo, Hiroki Uchida, Yukio Iwashita, Masayuki Ohta, Masahumi Inomata (Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine)