^○Kiyoshi Kume, Atsushi Kanno, Toru Shimosegawa (Div. of Gastroenterology, Sch. of Med. Tohoku Uni., Sendai, Japan)

^○Ryusuke Kato, Hiroaki Yasuda, Hayato Miyake, Toshifumi Doi, Osamu Dohi, Tetsuya Okayama, Naohisa Yoshida, Kazuhiro Kamada, Kazuhiro Katada, Kazuhiko Uchiyama, Yoshio Sogame, Osamu Handa, Tomohisa Takagi, Tsuyoshi Ishikawa, Junichi Sakagami, Hideyuki Konishi, Yuji Naito, Yoshito Ito (Div. of Gastroenterology and Hepatology,Kyoto Prefectural University of Medicine,Kyoto,Japan)

^○Tadayuki Takagi¹, Atsushi Irisawa², Hiromasa Ohira¹ (1.Dept. of Gastroenterology and Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan, 2.2) Department of Gastroenterology. Fukushima Medical University Aizu Medical Center. Aizuwakamatsu. Japan.)

^○Kiyohito Kato, Hideki Kamada, Takuma Yamashita, Kiyoyuki Kobayashi, Ryoichi Okura, Takayuki Fujimori, Tsutomu Masaki (Dept. of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa,Japan)

^○Oana Shuhei, Shou Shibata, Nozomi Matsuda, Takayuki Matsumoto (Div. of Gastroenterology, Dept. of Internal Medicine, Iwate Medical University, Japan)