^○Tomohisa Yamamoto¹, Sohei Satoi¹, Tsutomu Fujii², Suguru Yamada³, Hiroaki Yanagimoto¹, So Yamaki¹, Hideki Takami³, Satoshi Hirooka¹, Hisashi Kosaka¹, Masaya Kotsuka¹, Takayuki Miyara⁴, Yasuhiro Kodera³ (1.Departmtnt of Surgery, Kansai Medical University, Osaka, Japan, 2.Department of Surgery and Science, University of Toyama. Toyama, Japan, 3.Department of Gastroenterological Surgery (Surgery 2), Nagoya University Graduate School of Medicine. Nagoya, Japan, 4.First Department of Internal Medicine, Kansai Medical University)

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

^○Yasuo Nagai, Yasutaka Kokudo, Toshiaki Morihiro, Masaki Tokumo (Depatment of Surgery, Kagawa Rousai Hospital)

^○Hodaka Moriyama¹, Kouji Asai¹, Manabu Watanabe¹, Tomoaki Saito¹, Manabu Kujiraoka¹, Yoshihisa Saida¹, Iruru Maetani², Shinya Kusachi¹ (1.Department of Surgery, Toho University Ohashi Medical Center, 2.Department of Gastrointestinal Medicine, Toho University Ohashi Medical Center)

^○Yasuyuki Sugiyama, Shinji Osada, Yoshiyuki Sasaki (Department of Surgery, Gifu Municipal Hospital)