^○Shunsuke Yoshii, Yoshito Hayashi, Kengo Nagai, Tetsuji Fujinaga, Akira Maekawa, Yoshiki Tsujii, Takuya Inoue, Kenji Watabe, Hideki Iijima, Masahiko Tsujii, Tetsuo Takehara (Dept. of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Osaka, Japan)

^○Shintaro Fujihara, Hirohito Mori, Hideki Kobara, Noriko Nishiyama, Taiga Chiyo, Tae Matsunaga, Maki Ayaki, Tatsuo Yachida, Asahiro Morishita, Makoto Oryu, Tsutomu Masaki (Kagawa University, Faculty of Medicine Dept. of Gastroenterology and Neurology , Japan)

^○Mika Takasumi¹, Takuto Hikichi², Ko Watanabe², Tadayuki Takagi¹, Rei Suzuki¹, Jun Nakamura¹, Mitsuru Sugimoto¹, Hitomi Kikuchi¹, Naoki Konno¹, Yuichi Waragai¹, Katsutoshi Obara², Hiromasa Ohira¹ (1.Dept. of Gastroenterology and Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan, 2.Department of Endoscopy, Fukushima Medical University Hospital, Fukushima, Japan)

^○Hideaki Koga, Tokuma Tanuma, Yushi Kimura, Itaru Yamamoto, Shinji Urade, Taku Harada, Masafumi Nomura, Hiroyuki Maguchi (Center For Gastroenterology, Teine-Keijinkai Hospital, Sapporo, Japan)

^○Takashi Akutagawa¹, Kohei Yamanouchi², Ryuichi Iwakiri² (1.Div. of Gastroenterology, Dept. of Internal Medicine, Saga Medical School, Saga, Japan, 2.Department of Internal Medicine & Gastrointestinal Endoscopy, Saga Medical School, Saga, Japan)