^○Mitsuharu Fukasawa, Shinichi Takano, Nobuyuki Enomoto (First Dept. of Internal Medicine, Yamanashi University, Yamanashi, Japan)

^○Eizaburo Ohno¹, Yoshiki Hirooka², Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan, 2.Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan)

^○Naoki Yamamoto, Hironari Kato, Hiroyuki Okada (Dept. of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan)

^○Hirofumi Harima, Seiji Kaino, Isao Sakaida (Dept. of Gastroenterology and Hepatology, Graduate Sch. of Med. Yamaguchi Univ., Ube, Japan)

^○Hiroo Imazu¹, Tomohiro Kato¹, 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)

^○Haruo Miwa¹, Kazuya Sugimori², Shin Maeda¹ (1.Div. of Gastroenterology, Yokohama City University School of Medicine, Yokohama, Japan, 2.Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan)

^○Takeshi Miyata, Masayuki Kitano, Masatoshi Kudo (Dept. of Gastroenterology and Hepatology, Kinki Univ, Japan)

^○Yoshihiro Izumi, Keiji Hanada, Akihito Okazaki (JA広島厚生連 尾道総合病院 消化器内科)

^○Yousuke Nakai, Hiroyuki Isayama, Kazuhiko Koike (Departmentof Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan)

^○Hiroshi Kawakami¹, Yoko Abe¹, Tsuyoshi Hayashi² (1.Dept. of Gastroenterology and Hepatology, Hokkaido Univ. Hospital, Sapporo, Japan, 2.Dept. of Medical Oncology and Hematology, Sapporo Medical Univ., Sapporo, Japan)

^○Tadahisa Inoue, Fumihiro Okumura, Hitoshi Sano (Dept. of Gastroenterology, Gifu Prefectural Tajimi Hospital, Gifu, Japan)

^○Hirotoshi Ishiwatari¹, Tsuyoshi Hayashi¹, Hiroshi Kawakami² (1.Dept. of Medical Oncology and Hematology, Sapporo Medical University School of Medicine, Sapporo, Japan, 2.Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan)

^○Tsukasa Ikeura, Hideaki Miyoshi, Makoto Takaoka (The Third Dept. of Internal Medicine, Kansai Medical University, Osaka, Japan)

^○Nozomi Okuno, Kazuo Hara, Kenji Yamao (Dept. of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Japan,)