^○Kyung-Suk Suh (Department of Surgery, Seoul National University Hospital College of Medicine, Seoul, Korea)

^○Kuo-Hsin Chen (Division of General Surgery, Department of Surgery Far-Eastern Memorial Hospital, New Taipei City, Taiwan)

^○Koichiro Hata, Tetsuya Tajima, Junichi Yoshikawa, Jiro Kusakabe, Ichiro Tamaki, Hirokazu Tanaka, Ken Fukumitsu, Takashi Ito, Shintaro Yagi, Hideaki Okajima, Toshimi Kaido, Shinji Uemoto (Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kyoto University, Kyoto, Japan)

^○Koji Natsuda, Akihiko Soyama, Masaaki Hidaka, Tomohiko Adachi, Shinichiro Ono, Satomi Okada, Takashi Hamada, Mitsuhisa Takatsuki, Susumu Eguchi (Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences)

^○Hiroyuki Nitta, Takeshi Takahara, Yasushi Hasegawa, Hirokatsu Katagiri, Shoji Kanno, Daiki Takeda, Kenji Makabe, Yuji Akiyama, Koki Otsuka, Keisuke Koeda, Akira Sasaki (Department of Surgery, Iwate Medical University School of Medicine, Morioka, Japan)