^○Yuta Abe¹, Naokazu Chiba², Masahiro Shinoda¹, Minoru Kitago¹, Hiroshi Yagi¹, Kiminori Takano¹, Go Oshima¹, Nario Hayatsu¹, Kisho Mihara¹, Taizo Hibi⁴, Osamu Itano³, Shigeyuki Kawachi², Yuko Kitagawa¹ (1.Department of Surgery, Keio University, Tokyo, Japan, 2.Surgery, Tokyo Medical University Hachioji Medical Center, 3.Hepato-Biliary-Pancreatic & Gastrointestinal Surgery International University of Health and Welfare School of Medicine, Chiba, Japan, 4.Transplantation/Pediatric Surgery, Kumamoto University, Kumamoto, Japan)

^○Masaru Matsumura, Yoshihiro Sakamoto, Junichi Arita, Nobuhisa Akamatsu, Junichi Kaneko, Kiyoshi Hasegawa (Departments of Hepato-Biliary-Pancreatic Surgery, The University of Tokyo)

^○Yu Takahashi, Hiromichi Ito, Yosuke Inoue, Takeaki Ishizawa, Yoshihiro Mise, Yoshihiro Ono, Takafumi Sato, Yoshinori Takeda, Genki Watanabe, Shoji Kawakatsu, Shoichi Irie, Atsushi Oba, Tomoya Mizino, Yuichi Nakaseko, Akio Saiura (Department of Gastroenterological Surgery, Cancer Institute Hospital)

^○Minoru Esaki, Yoji Kishi, Satoshi Nara, Toshimitsu Iwasaki, Kengo Fukuoka, Kazuaki Shimada (Hepatobiliary Pancreatic Surgery Division, National Cancer Center Hospital)

^○Teiichi Sugiura, Yukiyasu Okamura, Takaaki Ito, Yusuke Yamamoto, Ryo Ashida, Katsuhisa Ohgi, Nobuyuki Watanabe, Mihoko Yamada, Takuya Minagawa, Shusei Sano, Shunsuke Tamura, Takashi Miyamoto, Katsuhiko Uesaka (Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, Shizuoka, Japan)

^○Takashi Mizuno, Tomoki Ebata, Yukihiro Yokoyama, Tsuyoshi Igami, Junpei Yamaguchi, Shunsuke Onoe (Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine)