^○Shigeki Fukusada, Fumihiro Okumura, Yuta Suzuki, Tadahisa Inoue, Kenta Kachi, Takanori Ozeki, Kaiki Anbe, Hiroyasu Iwasaki, Hirotada Nishie, Takashi Mizushima, Hitoshi Sano (Div. of Gastroenterology,Gifu Prefectual Tajimi Hospital, Tajimi, Japan)

^○Junpei Asano¹, Tetsuya Ito¹, Takaya Oguchi¹, Keita Kanai¹, Norikazu Arakura² (1.Dept. of Gastroenterology, Shinshu University School of Medicine, Matsumoto, Japan, 2.Endoscopic Examination Center, Shinshu University School of Medicine, Matsumoto, Japan)

^○Hiroko Shindo¹, Mitsuharu Fukasawa¹, Shinichi Takano¹, Makoto Kadokura², Ei Takahashi¹, Yudai Yokota¹, Sumio Hirose¹, Tadashi Sato¹, Nobuyuki Enomoto¹ (1.First Dept. of Internal Medicine, University of Yamanashi, Yamanashi, Japan, 2.Gastroenterological medicine, Kofu Municipal Hospital, Yamanashi, Japan)

^○Sumio Hirose, Mitsuharu Fukasawa, Tadashi Sato, Shinichi Takano, Hiroko Shindo, Ei Takahashi, Yudai Yokota, Nobuyuki Enomoto (First Dept. of Medicine,University of Yamanashi,Yamanashi,Japan)

^○TESSHIN BAN¹, Takahiro Nakazawa², KATSUMI HAYASHI¹, ETSURO ORITO¹ (1.Dept. of Gastroenterology, Nagoya Daini Red Cross Hospital, Nagoya, Japan, 2.Dept. of Gastroenterology and Metabolism, Nagoya city Univ., Nagoya, Japan)