^○Makoto Onodera¹, Yoshihiro Inoue¹, Takayuki Matsumoto², Masayuki Sato¹, Satoshi Kikuchi¹, Yasuhisa Fujino¹ (1.Dept. of Emergency Medicine, Sch. of Med. Iwate Medical University, Iwate, Japan, 2.Div. of Gastroenterology, Dept. of Internal Medicine, Sch. of Med. Iwate Medical University, Iwate, Japan)

^○Etsuko Yokota¹, Junichi Akiyama¹, Toshiyuki Sakurai¹, Yuzou Yago^1,2, kazuhiro watanabe¹, hidetaka okubo¹, Naoyoshi Nagata¹, chizu yokoi¹, Takayuki Shimada¹, Yusuke Takasaki¹, Koki Okahara¹, Eri Kihira¹, Hourin Cho¹, Masahiro Hata¹, Shiori Moriyasu¹, Yuya Hisada¹ (1.Dept. of Gastroenterology, National Center of Global Health and Medicine, Tokyo, Japan, 2.Tokyo, Japan)

^○Nozomi Sato¹, Yoshichika Oishi¹, Ryosuke Omi¹, Midori Suzuki¹, Tetsuya Hiraishi¹, Yasunobu Fukuda¹, Satoshi Baba¹, Chiaki Okuse¹, Michihiro Suzuki¹, FUMIO Ito² (1.Div. of Gastroenterology and Hepatology, Dept. of Internal Medicine, Kawasaki Municipal Tama Hospital, Japan, 2.Division of Gastroenterology and Hepatology, Department of Internal Medicine, St.Marianna University School of Medicine)

^○Youichi Miyaoka¹, Aya Fujihara², Satoshi Kotani², Kousuke Tsukano², Sayaka Ogawa², Satoshi Yamanouchi², Ryusaku Kusunoki², Satoko Ito², Hirofumi Fujishiro¹, Nariaki Kohge² (1.Div. of Endoscopy, Shimane Prefectural Central Hospital, Shimane, Japan, 2.Division of Gastroenterology, Shimane Prefectural Central Hospital, Shimane, Japan)

^○Yusaku Takatori¹, Motohiko Kato¹, Masayuki Suzuki^1,2, Keiichiro Abe¹, Hiroaki Takada¹, Tetsu Hirata¹, Michiko Sato¹, Tomoyasu Naruse¹, Kaoru Takabayashi¹, Yoichi Fujiyama¹, Masahiko Takahashi¹, Toshio Uraoka¹ (1.Dept. of Gastroenterology, Tokyo Medical Center, Tokyo, Japan, 2.Suzuki Clinic, Tokyo, Japan)