^○Hiroshi Araki¹, Takashi Ibuka², Masahito Shimizu² (1.Div. of Endoscopy.Gifu Univ. Hosp.. Gifu. Japan, 2.Dep. of Gastroenterology. Sch. of.Med.Gifu Univ.. Gifu.Japan)

^○Hirotaka Yamamoto (Dept. of Gastroenterology, Tokyo Women'S Medical University, Tokyo, Japan)

^○Hiroyuki Nakanishi, Masayuki Kurosaki, Namiki Izumi (Dept. of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan)

^○Shigefuku Ryuta, Hideaki Takahashi, Michihiro Suzuki (Dept. of Gastroenterology & Hepatology, Sch. of Med. St. Marianna Univ., Kanagawa, Japan)

^○Hisashi Hidaka¹, Shigehiro Kokubu², Wasaburo Koizumi¹ (1.Dept. of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Japan, 2.Shin-yurigaoka General Hospital, Institute for Liver Disease Minimal Invasive Treatment, Kawasaki, Japan)

^○Kunio Nakane, Hajime Ishii, Masafumi Komatsu (Dept. of Gastroenterology, Akita City Hospital, Akita, Japan)

^○Goro Shibukawa, Atsushi Irisawa (Dept. of Gastroenterology, Fukushima Medical University Aizu Medical Center, Aizuwakamatsu, Japan)

^○Yoshihiro Furuichi, Takatomo Sano, Fuminori Moriyasu (The Dept. of Gastroenterology and Hepatology, Tokyo Medical University Hospital, Tokyo, Japan)

^○Takayuki Yokota, Shinichi Hashimoto, Isao Sakaida (Dept. of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube., Japan)

^○Masato Murakami¹, Fumio Chikamori², Keiichiro Nishino¹ (1.Dept. of Internal Medicine, Murakami Memorial Hospital, Saijo, Japan, 2.Department of Surgery, Kuniyoshi Hospital, Kochi, Japan)

^○Shigenaga Matui, Hiroshi Kashida, Masatoshi Kudo (Dept. of Hepatogastroenterology, Faculty of Medicine. Kinki Univ., Osaka, Japan)

^○Masaru Kubokawa, Kayo Tokumaru, Kazuya Akahoshi (Dept. of Gastroenterology, Aso Iizuka Hospital, Fukuoka, Japan)

^○Kosaku Moribata, Hisanobu Deguchi, Masao Ichinose (Second Dept. of Internal Medicine, Wakayama Medical University, Wakayama, Japan)

^○Takahiro Sato, Mutsuumi Kimura (Dept. of Gastroenterology, Sapporo Kosei Hospital, Sapporo, Japan)

^○Sho Kitagawa, Takahiro Sato, Mutsuumi Kimura (Dept. of Gastroenterology, Sapporo Kosei General Hospital, Sapporo, Japan)

^○Obara Katsutoshi (Dept. of Endoscopy, Fukushima Medical University Hospital, Japan)