^○Tomohiro Iguchi, Keishi Sugimachi (CenterDepartment of Hepato-Biliary Pancreatic Surgery, National Hospital Organization Kyushu Cancer, Fukuoka, Japan)

^○Hironori Ryota, Hiroaki Yanagimoto, Sohei Satoi, Tomohisa Yamamoto, Hisashi Kosaka, Satoshi Hirooka, So Yamaki, Masaya Kotsuka, Yoichi Matsui (Department of Surgery, Kansai Medical University, Osaka, Japan)

^○Masaharu Kogure, Ryouta Matsuki, Masaaki Yokoyama, Yutaka Suzuki, Masanori Sugiyama (Department of Surgery, Kyorin University, Tokyo, Japan)

^○Masaya Kotsuka, Hiroaki Yanagimoto, Tomohisa Yamamoto, Hisashi Kosaka, Satoshi Hirooka, So Yamaki, Yoichi Matsui, Sohei Satoi (Department of Surgery, Kansai Medical University, Hirakata, Japan)

^○Kabuto Takano, Tatsuya Nomura, Yoshiaki Tsuchiya (Department of Digestive Surgery, Niigata Cancer Center Hospital)