^○Tomohiro Mizutani, Wataru Shouji, Kazunori Nakamura, Shou Mineta, Go Wakabayashi (Department of Surgery, Ageo Central General Hospital, Saitama, Japan)

^○Hideaki Kodama, Ayako Endo, Masahiko Fukase, Gen Yunome, Hiroshi Oshio, Shin Teshima, Hiromune Shimamura, Kazunori Takeda (Department of Surgery, Sendai Medical Center, National Hospital Organization, Sendai, Japan)

^○Masahiko Sakoda¹, Satoshi Iino¹, Yota Kawasaki¹, Motuyuki Hashiguchi¹, Kiyonori Tanoue¹, Hiroshi Kurahara¹, Yuko Mataki¹, Kosei Maemura¹, Hiroyuki Shinchi³, Shinichi Ueno², Shoji Natsugoe¹ (1.Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan, 2.Department of Clinical Oncology, Kagoshima University, Kagoshima, Japan, 3.Kagoshima University Graduate School of Health Sciences, Kagoshima, Japan)

^○Shingo Nakashima, Shoichiro Hikami, Yasuhito Izumiya, Sousuke Komiyama, Soujin Sai, Sadao Kawakami (Departmemt of Surgery, Fukuchiyama City Hospital, Kyoto, Japan)

^○Osamu Jindou, Shohachi Suzuki, Hideto Ochiai, Atsuko Fukazawa, Keisuke Inaba (Department of Gastroenterological Surgery, Iwata City Hospital)

^○Keiichiro Oshima, Kazuteru Monden, Chiaki Kobatake, Masashi Yoshimoto, Masayoshi Hioki, Hiroshi Sadamori, Norihisa Takakura (Department of Surgery, Fukuyama City Hospital, Japan)