^○Yukio Aruga, Daisuke Kumaki, Akira Sakamaki, Masashi Yamakawa, Masaaki Hirano (Niigata Prefectural Central Hospital, Gastroenterology and Hepatology, Japan)

^○Itsuki Sano, Hiroyuki Maguchi, Akio Katanuma, Kuniyuki Takahashi, Manabu Osanai, Kei Yane, Toshifumi Kin, Manabu Sen-yo, Satoshi Ikarashi, Ryuki Minami, Hajime Yamazaki (Center For Gastroenterology, Teine-Keijnkai Hospital, Japan)

^○Tomoaki Takeyama¹, Yoshiki Hirooka², Hiroki Kawashima¹, Eizaburo Ohno¹, Hiroyuki Sugimoto¹, Daijuro Hayashi¹, Tomomasa Morishima¹, Takamichi Kuwahara¹, Manabu Kawai¹, Hiroki Suhara¹, Takeshi Yamamura², Kazuhiro Furukawa¹, Kohei Funasaka², Masanao Nakamura¹, Ryoji Miyahara¹, Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan, 2.Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan)

^○Juri Ikemoto, Keiji Hanada, Akihito Okazaki, Kozue Kanemitsu, Yuji Teraoka, Yoshihiro Izumi, Naomichi Hirano (Onomichi General Hospital, Japan)

^○Noriyo Urata, Daisuke Goto, Takahito Oka, Jun Nakamura, Ken Nishino, Mitsuhiko Suehiro, Miwa Kawanaka, Hirofumi Kawamoto (Div. of General Internal Medicine, Kawasaki Medical School.Okayama, Japan)