^○Ryota Matsuki, Hirokazu Momose, Masaharu Kogure, Masaaki Yokoyama, Yutaka Suzuki, Masanori Sugiyama (Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan)

^○Sho Sakamoto¹, Go Oshima¹, Yuta Abe¹, Masahiro Shinoda¹, Minoru Kitago¹, Hiroshi Yagi¹, Kiminori Takano¹, Taizou Hibi^1,2, Osamu Itano^1,3, Yuko Kitagawa¹ (1.Department of Surgery, Keio University, Tokyo, Japan, 2.Department of Transplantation/Pediatric Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan, 3.Department of Hepato-Biliary-Pancreatic & Gastrointestinal Surgery, Internat ional University of Health and Welfare School of Medicine, Chiba, Japan)

^○Tae Yun Lee, Ho Joong Choi, Yumi Kim, Bong Jun Kwak, Jae Hyun Han, Tae Ho Hong, Young Kyoung You, Dong Goo Kim (Department of Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea)

^○Nobutake Tanaka¹, Suguru Yamada¹, Hiroyuki Sugimoto², Yoshiyasu Kato¹, Mitsuru Tashiro¹, Haruyoshi Tanaka¹, Tomonari Asano¹, Fuminori Sonohara¹, Hideki Takami¹, Masaya Suenaga¹, Yukiko Niwa¹, Masamichi Hayashi¹, Tsutomu Fujii³, Yasuhiro Kodera¹ (1.Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine466, 2.Department of Surgery, Komaki City Hospital., 3.Department of Surgery and Science Graduate School of Medicine and Pharmaceutical Sciences University of Toyama)

^○Manabu Saito, Hisasi Kametaka, Hironobu Makino, Tadaomi Fukada, Takahiro Akiyama, Syunsuke Tabe (Department of Surgery, Odawara Municipal Hospital, Odawara, Japan)

^○Kaoru Ogawa, Kazunori Nojiri, Hirokazu Suwa, Jun Kimura, Kenichi Yoshida, Masatoshi Mogaki, Hidenobu Masui, Kaoru Nagahori (Department of Surgery, Yokosuka Kyosai Hospital, Kanagawa, Japan)