^○Junichi Haruta, Takeo Yamaguchi, Masao Doizaki (Dept.Of Gastroenterology, Japanese Redcross Nagoya 1St Hospital)

^○Keisuke Fukutomi, Takuya Yamada, Eiji Mita (Dept. of Gastroenterology and Hepatology, National Hospital Organization, Osaka National Hospital, Osaka, Japan)

^○Tsukasa Furuhata, Shu Hoteya, mitsuru Kaise (Toranomon Hospital, Japan)

^○Katsumasa Kobayashi, Yohei Furumoto, Kazuhiko Fujiki (Tokyo Metropolitan Bokutoh Hospital, Dept. of Internal Medicine, Tokyo, Japan)

^○Kaoru Nakano, Naoki Ishii, Yoshiyuki Fujita (Div. of Gastroenterology, St. Luke'S International Hospital, Tokyo, Japan)

^○Yuto Shimamura¹, Noriatsu Imamura², Naoki Ishii¹ (1.Div. of Gastroenterology, St. Luke'S International Hospital, Tokyo, Japan, 2.Division of Endoscopy, St. Luke's International Hospital, Tokyo, Japan)

^○Shiori Moriyasu, Naoyoshi Nagata, Junichi Akiyama (National Center For Global Health and Medicine, Tokyo, Japan)

^○Hiroyuki Hasegawa, Kuniaki Shindou, Kazumasa Shimura (Div. of Gastroenterology, Dept. of Medicine, Japan Community Healthcare Organization Yamanashi Hospital, Yamanashi, Japan)

^○takanori hosokawa, Masayuki Kurosaki, Namiki Izumi (Dept. of Gastroenterology Musashino Red Cross Hospital, Tokyo, Japan)

^○Yohei Furumoto, Toru Asano, Kazuhiko Fujiki (Dept. of Internal Medicine, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan)

^○Hirosato Doi, Masanori Takahashi, Keita Sasajima (Dept. of Gastroenterology, Saitama Red Cross Hospital, Saitama, Japan)

^○Chikara Iino^1,2, Tatsuya Mikami³, Shinsaku Fukuda² (1.Dept. of Internal Medicine, Hirosaki Municipal Hospital, Aomori, Japan, 2.Department of Gastroenterology, Hirosaki University Graduate School of Medicine, 3.Division of Endoscopy, Hirosaki University Hospital)

^○Fumitaka Arihara, Akito Sakai, yatsugi Noda (Dept. of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan)

^○Shotaro Umezawa¹, Toshihiro Niikura², Atsushi Nakajima¹ (1.Dept. of Gastroenterology and Hepatology, Yokohama City University School of Medicine, Yokohama, Japan, 2.Department of Gastroenterology, Tokyo Metropolitan Hiroo Hospital, Tokyo, Janap)

^○Minoru Murayama¹, Takao Katsube², Yoshihiko Naritaka² (1.Dept. of Surgery, Izumi Memorial Hosp., Tokyo, Japan, 2.Dept. of Surgery, Tokyo Women's Med. Univ. Med. Center East, Tokyo, Japan)

^○Arata Kobayashi, Makoto Kobayashi, Motoyoshi Yano (Div. of Gastroenterology, Dept. of Internal Medicine, Yokkaichi Municipal Hospital., Mie, Japan)