^○Atsushi Igawa¹, Shiro Oka¹, Kazuaki Chayama² (1.Dept. of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan, 2.Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan)

^○Motoyasu Osawa, Akiko Shiotani, Ken Haruma (Gastroenterology,Kawasaki Medical School, Okayama, Japan)

^○Takahiro Wakamatsu, Norimasa Fukata, Kazuichi Okazaki (Third Dept. of Internal Medicine, Kansai Medical University, Hirakata, Japan)

^○Washio Ema, Koji Ikegami, Motohiro Esaki (Dept. of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.)

^○Tomohiro Shirasawa¹, Shinichi Hashimoto¹, Isao Sakaida¹ (1.Dept. of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan, 2.Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan)

^○Kotaro KUWAKI¹, Osamu Tsuruta², Takuji Torimura¹ (1.Dept. of Medichine, Div. of Gastroenterology, Kurume University., Fukuoka, Japan, 2.Kurume University Hospital, Gastroenterology center)

^○Kazuya Kitamura, Takashi Kagaya, Shuichi Kaneko (Dept. of Gastroenterology, Kanazawa Univ., Ishikawa, Japan)

^○Tsuyoshi Beppu, Yutaka Yano, Toshiyuki Matsui (Dept. of Gastroenterology,Fukuoka University Chikushi Hospital,Fukuoka,Japan)

^○akirs sonoda, Kazuhiro Mizukami, Kazunari Murakami (Oita University, Dept. of Gastroenterology, Oita, Japan)

^○Kazuma Sekiba, Tomoya Ohmae, Makoto Okamoto (Dept. of Gastroenterology, Jr Tokyo General Hospital, Tokyo, Japan)

^○Hidetoshi Ohta¹, Shinichi Katsuki², Tamotsu Sagawa³ (1.Dept.Of Gastroenterology, Sapporo Orthopaedics and Cardiovascular Hospital, Sapporo, Japan, 2.Center of Gastroenterology, Otaru, Japan, 3.Hokkaido Cancer Center, Sapporo, Japan)

^○Tatsuhiro Tsujimoto¹, Hideto Kawaratani², Hisao Fujii² (1.Tsujimoto Clinic, Nara, Japan, 2.Department of Endoscopy and Ultrasound, Nara Medical University, Kashihara, Japan)

^○Shoji Mitsufuji, Kotaro Okuda, Daimon Yukiko (Dept. of Gastroenterology, Kyoto Kujo Hospital, Kyoto, Japan)

^○Takafumi Omori, Naoki Omiya, Ichiro Hirata (Gastroenterology, Fujita Health University, Toyoake, Japan)

^○Shinichi Ishihara (Div.Of Gastroenterology,Deept.Of Internalmedicine,Ishihara Gastroenterology Clinic.,Zentsuji,Japan)

^○Sadaharu Noda, Takuya Inoue, Kazuhide Higuchi (2Nd Dept. of Internal Medicine, Osaka Medical College, Takatsuki, Osaka, Japan)

^○Hirotsugu Watabe¹, Tetsuya Nakamura² (1.Wakamiya Watabe Clinic, Chiba, Japan, 2.Dokkyo Medical School, Tochigi, Japan)