^○Marie Uchida, Koudai Tomioka, Yoshihiko Tashiro, tomokazu Kusano, Tomotake Koizumi, Satoru Gotou, Kimiyasu Yamazaki, Satoru Fujimori, Kouji Ootuka, Kousuke Yamada, Took Hakozaki, Takeshi Aoki, Masahiko Murakami (Department of Gastroenterological & General Surgery School of Medicine,Showa University)

^○Takayuki Tanaka, Tomoo Kitajima (Department of Surgery, Nagasaki Rosai Hospital, Nagasaki, Japan)

^○Sadahiko Kita¹, Ryoji Takeda¹, Masaaki Awane¹, Yasumitsu Matsumura¹, Katsuhiko Mizuno¹, Yoshiro Araki¹, Hiroshi Yasui² (1.Department of Surgery, Rakuwakai Otowa Hospital, Kyoto, Japan, 2.Department of Pathology, Rakuwakai Otowa Hospital, Kyoto, Japan)

^○Yutaka Suzuki, Toshiyuki Mori, Masaaki Yokoyama, Sangchul Kim, Hirokazu Momose, Ryota Matsuki, Masaharu Kogure, Tetsuya Nakazato, Nobutsugu Abe, Masanori Sugiyama (Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan)