1Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin- Kawahara-cho, Sakyo-ku,, Kyoto, 606-8507 Japan
2Department of Gastroenterological Surgery, Fujita Health University, Toyoake, Japan
3Department of Gastroenterological Surgery II, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
4Department of Surgical Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
5Department of Digestive and General Surgery, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
6Department of Pediatrics, Jikei University Katsushika Medical Center, Katsushika, Japan
7Department of Dermatology, Kindai University Hospital, Osaka, Japan
8Department of Surgery, Graduate School of Medicine, Nagoya University Hospital, Nagoya, Japan
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