^○Masashi Kawamura, Tatsuya Kikuchi, Yoshitaka Sakai, Futoshi Nagasaki, Satoshi Takai, Eri Saitoh (Dept. of Gastroenterology, Sendai City Hospital, Miyagi, Japan)

^○Akiko Saka¹, Kazuyoshi Yagi¹, Satoshi Nimura² (1.Dept. of Internal Medicine, Niigata Prefectural Yoshida Hospital,Tsubame, Japan, 2.Department of Pathology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan)

^○Kazuyoshi Yagi, Akiko Saka, Yujiro Nozawa, Atsuo Nakamura (Div. of Internal Medicine, Niigata Prefectural Yoshida Hospital, Tsubame, Japan)

^○Daisuke Yamaguchi^1,2, Shinya Kodashima², Kazuhiko Koike² (1.Dept. of Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, Japan, 2.Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Japan)

^○Tetsuya Ueo¹, Hirotoshi Yonemasu², Tetsuya Ishida¹, Kazumi Togo¹, Masahide Fukuda¹, Yuka Yanai¹, Yoko Kakisako², Terumitsu Motomura¹, Ryoichi Narita¹, Kazunari Murakami¹ (1.Departments of Gastroenterology, Oita Red Cross Hospital, Japan, 2.Departments of Pathology, Oita Red Cross Hospital, Japan, 3.Department of Gastroenterology, Faculty of Medicine, Oita University, Japan)