Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan

Yuto Kubo MD, Tomoki Makino MD, Koji Tanaka MD, Kotaro Yamashita MD, Hidetoshi Eguchi MD & Yuichiro Doki MD

Department of Surgery, Kansai Medical University, Hirakata, Japan

Makoto Yamasaki MD

Department of Surgery, Faculty of Medicine, Kindai University, Osaka, Japan

Osamu Shiraishi MD & Takushi Yasuda MD

Department of Surgery, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan

Keijiro Sugimura MD

Department of Digestive Surgery, Osaka International Cancer Institute, Osaka, Japan

Hiroshi Miyata MD & Masahiko Yano MD

Department of Surgery, Osaka General Medical Center, Osaka, Japan

Masaaki Motoori MD & Kazumasa Fujitani MD

Department of Surgery, National Hospital Organization Osaka National Hospital, Osaka, Japan

Atsushi Takeno MD & Motohiro Hirao MD

Department of Surgery, Kindai University Nara Hospital, Nara, Japan

Yutaka Kimura MD

Department of Frontier Science for Cancer and Chemotherapy, Osaka University Graduate School of Medicine, Osaka, Japan

Taroh Satoh MD

Department of Surgery, Suita Municipal Hospital, Osaka, Japan

Masahiko Yano MD