^○Motoyasu Kusano¹, Hiroko Hosaka², Shiko Kuribayashi² (1.Dept. of Endoscopy and Endoscopic Surgery, Gunma University Hospital, Gunma, Japan, 2.Department of Gastroenterology, Gunma University Hospital, Gunma, Japan)

^○Fumio Suzaki, Jun Hamanaka, Yuki Miura (Yokohma Minami-Kyosai Hospital, Dept. of Gastroenterology, Yokoham, Japan)

^○Shoji Kobayashi, Tomoyoshi Uetake, Nobuyuki Enomoto (First Dept. of Internal Medicine, Univ. of Yamanashi, Yamanashi, Japan)

^○Noriaki Manabe¹, Jiro Hata¹, Ken Haruma² (1.Div. of Endoscopy and Ultrasonography, Dept. of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan, 2.Div. of Gastroenterology, Dept. of Internal Medicine, Kawasaki Medical School, Kurashiki, Japan)

^○Kumpei Kadosaka, Masayuki Kitano, Masatoshi Kudo (Dept. of Gastroenterology and Hepatology, Kinki University Faculty of Medicine, Japan)

^○Kuniyo Gomi, Masaaki Matsukawa, Haruhiro Inoue (Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan)

^○Konosuke Nakaji¹, Yukinori Nakae¹, Shigeo Suzumura² (1.Endoscopy Center, Aishinkai Nakae Hospital, Wakayama, Japan, 2.Urakawa Red Cross Hospital)

^○Makoto Nakano¹, Shiro Oka¹, Kazuaki Chayama² (1.Hiroshima Japan, 2.Hiroshima Japan)

^○Takeshi Mizukami¹, Hidekazu Suzuki², Takanori Kanai² (1.Endoscopy Center, Nho Kurihama Medical and Addiction Center, Kanagawa, Japan, 2.Dept. of Gastroenterology, Keio Univ.)

^○Masayoshi Ono¹, Mototsugu Kato², Naoya Sakamoto¹ (1.Dept. of Gastroenterology and Hepatology,Hokkaido University, Graduate School of Medicine, Japan, 2.Division of Endoscopy, Hokkaido University Hospital)

^○Hidenori Okubo, Akiko Fuyuki, Atsushi Nakajima (Hepatology and Gastroenterology, Sch. of Med. Yokohama City Univ., Yokohama, Japan)