^○Kikuo Kanda¹, Ryukichi Akashi², Takeaki Kiyozumi¹ (1.Dept. of Gastroenterology, Kumamoto Regional Medical Center, Kumamoto, Japan, 2.Health Care Center, Kumamoto city medical association, Kumamoto, Japan)

^○Mitsuo Tokuhara^1,2, Masaaki Shimatani¹, Kazuichi Okazaki¹ (1.Kansai Medical University 3Rd Dept. of Internal Medicine, Japan, 2.daito-central hospital internal medicine department)

^○Toru Ueki, Shinichiro Muro, Yosuke Saragai (Div. of Internal Medicine, Fukuyama City Hospital, Hiroshima, Japan)

^○Satoshi Ikarashi, Hiroyuki Maguchi, Akio Katanuma (Center For Gastroenterology, Teine-Keijinkai Hospital, Sapporo, Japan)

^○Tsuyoshi Hamada, Hiroyuki Isayama, Kazuhiko Koike (Dept. of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan)

^○Hideki Miyata¹, Toshiyasu Iwao², Katsuya Hirose² (1.Gastrointestinal Medicine, Ehime Prefectural Central Hospital,Ehime,Japan, 2.Gastrointestinal Medicine, Aidu Central Hospital)

^○Yasuharu Kakizaki, Naohiko Makino, Yoshiyuki Ueno (Dept. of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan)

^○Hirotoshi Ishiwatari¹, Tsuyoshi Hayashi¹, Takahiro Urata² (1.Dept. of Medical Oncology and Hematology, Sapporo Medical University School of Medicine, Sapporo, Japan, 2.Department of Gastroenterology, Japanese Red Cross Kumamoto Hospital, Kumamoto, Japan)

^○Naoki Mori¹, Hiroo Imazu¹, Hisao Tajiri² (1.Dept. of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan, 2.Div. of Gastroenterology and Hepatology, Dept. of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan)

^○Toshio Fujisawa, Koichi Kagawa, Nobuyuki Matsuhashi (NTT Medical Center Tokyo, Japan)

^○Kei Ito, Yutaka Noda (Dept. of Gastroenterology, Sendai City Medical Center, Sendai, Japan)

^○Takashi Ishigaki, Tamito Sasaki, Kazuaki Chayama (Dept. of Gastroenterology and Metabolism, Hiroshima Univ. Hospital, Hiroshima, Japan)

^○Kazunari Nakahara¹, Shinjiro Kobayashi², FUMIO Ito¹ (1.Dep. of Gastroenterology and Hepatology, St. Marianna Univ., Sch. of Med, Kawasaki, Japan, 2.Dep. of Gastroenterogical and General Surgery, St. Marianna Univ., Sch. of Med, Kawasaki, Japan)

^○Kentaro Kamada, Takao Itoi, Fuminori Moriyasu (Dept. of Gastroenterology and Hepatology. Tokyo Medical Univ. , Tokyo, Japan)

^○Kensuke Kubota, Kunihiro Hosono, Yuji Fujita (Div. of Hepatogastroenterology, Sch. of Med.Yokohama City Univ, Yokohama,Japan)