^○Masaya Suenaga¹, Suguru Yamada¹, Masamichi Hayashi¹, Hideki Takami¹, Yukiko Niwa¹, Tomonari Asano¹, Daishi Morimoto¹, Mitsuru Tashiro¹, Nobutake Tanaka¹, Yoshiyasu Kato¹, Haruyoshi Tanaka¹, Mitsuro Kanda¹, Michael Goggins², Yasuhiro Kodera¹ (1.Nagoya University Graduate School of Medicine, Nagoya, Japan, 2.Johns Hopkins University, Baltimore, United States of America)

^○Akira Chikamoto¹, Daisuke Hashimoto², Naoki Umezaki¹, Takanobu Yamao¹, Masayo Tsukamoto¹, Yuki Kitano¹, Tatsunori Mayata¹, Kota Arima¹, Shigeki Nakagawa¹, Hirohisa Okabe¹, Hidetoshi Nitta¹, Katsunori Imai¹, Yo-ichi Yamashita¹, Takatoshi Ishiko¹, Hideo Baba¹ (1.Department of Gastroenterological Surgery, Kumamoto University, Kumamoto, Japan, 2.Department of Surgery, Omuta Tenryo Hospital, Omuta, Japan)

^○Michio Ueda, Takahide Ikeda, Itaru Hashimoto, Yuko Sugawara, Ryo Takagawa, Daisuke Inagaki, Hitoshi Murakami, Tomohiko Osaragi, Seiji Hasegawa, Hideyuki Ike, Tadao Fukushima (Department of Surgery, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan)

^○Masashi Kishiwada, Aoi Hayasaki, Takehiro Fujii, Yusuke Iizawa, Hiroyuki Kato, Akihiro Tanemura, Yasuhiro Murata, Yoshinori Azumi, Naohisa Kuriyama, Shugo Mizuno, Masanobu Usui, Hiroyuki Sakurai, Shuji Isaji (Department of Hepatobiliary Pancreatic and Transplant Surgery, Mie University, Tsu, Mie, Japan)

^○Hidetoshi Aizawa, Motokazu Sugimoto, Sho Yasuta, Naoki Yagi, Masatake Taniguchi, Ryo Morisue, Toshiyuki Suzuki, Masashi Kudo, Satoshi Okubo, Daigoro Takahashi, Shin Kobayashi, Shinichiro Takahashi, Masaru Konishi, Naoto Gotohda (Division of Hepatobiliary and Pancreatic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan)

^○Tomoharu Miyashita, Mitsuyoshi Okazaki, Yoshinao Ohbatake, Shinichi Nakanuma, Isamu Makino, Hidehiro Tajima, Hiroyuki Takamura, Sachio Fushida, Tetsuo Ohta (Department of Gastroenterological Surgery, Kanazawa University Hospital, Japan)