^○Masashi Utsumi, Hideki Aoki, Yuta Une, Hajime Kashima, Fumitaka Taniguchi, Takashi Arata, Koh Katsuda, Kohji Tanakaya (Department of Surgery, National Hospital Organization. Iwakuni Clinical Center)

^○Nobutoshi Horii, Daisuke Morioka, Jyunya Toyoda, Hiroshi Miyamoto, Gakuryu Nakayama, Michio Oyama, Miura Masaru, Yoshiki Sato (Department of Surgery ,Yokohama ekisaikai Hospital)

^○Peng Dai, Yanzhong Zhang (Department of Hepatobiliary & Pancreatic Surgery, Shanxi Provincial People's Hospital)

^○Kohei Miura, Jun Sakata, Takuya Ando, Kizuki Yuza, Yuki Hirose, Tetsuya Nakano, Tomohiro Katada, Hirosuke Ishikawa, Kazuyasu Takizawa, Takashi Kobayashi, Toshifumi Wakai (Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan)

^○Mikel Calvo Prieto, Gastaca M, Fernández L, Ruiz P, Ventoso A, Palomares I, Martínez-Indart L, Valdivieso A, Ortiz de Urbina J. (Hepatobiliary Surgery and Liver Transplant Unit. Cruces University Hospital)

^○Shintaro Miyao¹, Saiho Ko¹, Hirohumi Ishikawa¹, Tomohide Mukogawa¹, Masanori Matsusaka², Mitsuhiro Nakatani¹, Ayumi Nishioka¹, Yukimi Tanaka¹, Akihiko Watanabe¹ (1.Department of Surgery, Nara Prefecture General Medical Center, Nara, Japan, 2.Department of Emergency, Nara Prefecture General Medical Center)