^○Hiroya Akabori, Masaji Tani, Hiromitsu Maehira, Haruki Mori, Naomi Kitamura, Hiroya Iida, Shigeyuki Naka (Department of Surgery, Shiga University of Medical Science)

^○Kenji Nakagawa, Takahiro Akahori, Satoshi Nishiwada, Minako Nagai, Kota Nakamura, Naoya Ikeda, Masayuki Sho (Department of Surgery, Nara Medical University, Nara, Japan)

^○Kenjiro Iida, Kazuhiro Suzumura, Sinjiro Tamagawa, Hiroshi Nishida, Hideaki Iwama, Hideaki Sueoka, Seikan Hai, Masaharu Tada, Ikuo Nakamura, Naoki Uyama, Yasukane Asano, Toshihiro Okada, Ethuro Hatano, Jiro Fujimoto (Department of Surgery,Hepato-Biliary-Pancreatic Surgery, Hyogo College Of Medicine, Nishinomiya, Japan)

^○Yan Shi¹, Huan Yan¹, Jie Li², Yao Lv¹, Quanli Han¹, Zhikuan Wang¹, Guanghai Dai¹ (1.Oncology Department, Chinese PLA General Hospital, Beijing, P.R. China, 2.Department of Pathology, Chinese PLA General Hospital, Beijing, P.R. China)

^○Keita Wada, Keiji Sano, Fumihiko Miura, Makoto Shibuya, Masahiko Kainuma, Kunihiko Takahashi, Sachiyo Kawamura, Shunryo Minezaki, Kentaro Nemoto, Hiroe Toyoda (Department of Surgery, Teikyo University Shool of Medicine, Tokyo, Japan)

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