^○Tatsuo Morinushi, Keisuke Kanda, Nobuto Hirata, So Nakaji, Mitsuru Hirai, Toshiyasu Shiratori, Masayoshi Kobayashi, Naoki Okumura, Kenichi Suzuki, Kenji Yamauchi, Shigenobu Yoshimura, Masahiro Sanagawa, Yuya Yokoyama, Hiroki Yamamoto (Dept.Of Gastroenterology,Kameda Medical Center, Chiba , Japan)

^○Yoshiro Kawahara, Hiroyuki Okada (Dept.Of Endoscopy,Okayama Univ.Hospital, Okayama, Japan)

^○Yoji Sanomura¹, Shigeto Yoshida¹, Shinji Tanaka¹, Shiro Oka¹, Kazuaki Chayama² (1.Dept. of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan, 2.Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan)

^○Osamu Dohi¹, Atsushi Majima¹, Yuriko Onozawa¹, Tomoko Kitaichi¹, Yusuke Horii¹, Kentaro Suzuki¹, Akira Tomie², Reiko Kimura³, Kazuhiro Kamada¹, Osamu Handa¹, Nobuaki Yagi², Yuji Naito¹, Yoshito Ito¹ (1.Dept. of Molecular Gastroenterology and Hepatology, Graduate Sch. of Med., Kyoto Pref. Univ. of Med., Kyoto, Japan, 2.Dept. of Gastroenterology and Hepatology, Murakami Memorial Hospital, Asahi Univ., Gifu, Japan, 3.Dept. of Medical Oncology, Fukushima Med. Univ. of Med., Fukushima, Japan)

^○Hiroaki Kitae¹, Nobuaki Yagi¹, Akira Tomie¹, Yasuhiro Oosima¹, Akihiro Oobora¹, takao Kozima¹, Takahiro Kato² (1.Div. of Gastrointestinal Medicine, Murakami Memorial Hospital Asahi Univ., Gihu, Japan)