^○Yasuhisa Mori, Takao Ohtsuka, Kohei Nakata, Yoshihiro Miyasaka, Masafumi Nakamura (Department of Surgery and Oncology, Kyushu University Graduate School of Medical Sciences)

^○Takuya Okumura, Kenji Suzuki, Atsushi Kohga (Department of Surgery, Fujinomya City General Hospital)

^○Naohiro Hosomura, Mitsuaki Watanabe, Hidetake Amemiya, Hiromichi Kawaida, Hiroshi Kono, Daisuke Ichikawa (First Department of Surgery, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan.)

^○Atsuyuki Maeda, Yuji Kaneoka, Yuichi Takayam, Yasuyuki Fukami, Takamasa Takahashi, Masahito Uji (Department of Surgery, Ogaki Municipal Hospital, Gifu, Japan)

^○Yoshihiko Tashiro, Takahito Hirai, Kodai Tomioka, Hideki Shibata, Yusuke Wada, Tomoki Hakozaki, Koji Nogaki, Kosuke Yamada, Kazuhiro Matsuda, Tomokazu Kusano, Tomotake Koizumi, keitaro Mitamura, Akira Fujimori, Reiko Koike, Yuta Enami, Takeshi Aoki, Masahiko Murakami (Department of General and Gastroenterological Surgery, Showa University School of Medicine, Tokyo, Japan)

^○Yu-Yin Liu, Wei-Feng Li, Chih-Chi Wang (Department of General Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan)