^○Hiromitsu Maehira, Hiroya Iida, Naomi Kitamura, Haruki Mori, Nobuhito Nitta, Toru Miyake, Tomoharu Shimizu, Masaji Tani (Department of Surgery, Shiga University of Medical Science, Shiga, Japan)

^○Yuan Fang (Pancreatic Surgery Zhongshan Hospital, Fudan University)

^○Goro Ueda, Yoichi Matsuo, Yuichi Hayashi, Hiroyuki Imafuji, Kenta Saito, Tomoya Syamoto, Ken Tsuboi, Mamoru Morimoto, Hiroki Takahashi, Hideyuki Ishiguro, Syuji Takiguchi (Nagoya City University Gastroenterological Surgery)

^○Hitoe Nishino, Hiroyuki Yoshidome, Norikazu Yogi, Shintaro Maeda, Hidehito Shibasaki, Kazuyasu Shinmura (Department of General Surgery)

^○Jun Tauchi, Kenjiro Kimura, Ryosuke Amano, Sadaaki Yamazoe, Go Ohira, Ryota Tanaka, Kosei Hirakawa, Masaichi Ohira (Department of Surgical Oncology, Osaka City University Graduate School)

^○Kosuke Tanaka, shigeyoshi yamanaga, yasuhiro kihara, yuuji hidaka, yu kimura, hiroshi yokomizo (Department of Surgery, Japanese Red Cross Kumamoto Hospital)