^○Yukako Hamano¹, Toshiro Kamoshida¹, Takahiro Seimiya¹, Maki Matsui¹, Shoichi Sasaki¹, Takahisa Watahiki¹, Haruka Okawara¹, Atushi Okawara¹, Nobushige Kakinoki¹, Shinji Hirai¹, Akinori Yanaka², Yuji Oka¹ (1.Dept. of Internal Medicine, Hitachi General Hospital, Ibaraki, Japan, 2.Hitachi Medical Education and Research Center, University of Tsukuba Hospital, Ibaraki, Japan)

^○Miyahara Koichi, You Fujimoto, Noda Takahiro, Gotou Satoko, ide Yasusi, Uresino Hiroshi (Karatsu Red Cross Hospital, Departments of A Internal Medicine, Saga, Japan)

^○Yoshiaki Isono¹, Youichirou Baba², Katsumi Mukai¹, Tomomasa Tochio¹, Daisuke Suga¹, Hiroaki Kumazawa¹, Hiroki Tanaka¹, Shinpei Matsuzaki¹, Tomohiro Sase¹, Tomonori Saito¹, Hiroshi Okano¹, Gen Watanabe³ (1.Dept. of Gastroenterology, Suzuka General Hospital, Mie, Japan, 2.Department of Pathology, Suzuka General Hospital, Mie, Japan, 3.Division of Molecular and Diagnostic Pathology, Niigata University, Graduate School of Medical and Dental Sciences, Niigata, Japan)

^○YOICHI TAKIMOTO, Shogo Yanagisawa, Shungo Goto, Takako Endo, Jun Arimoto, Akito Iwasaki, TADAHIKO SHIBA, TAKASHI SAKAGUCHI, Kazuhiro Atsukawa, Hisao Takahashi (Gastrointestinal Medicine of Hiratsuka City Hospital, Kanagawa, Japan)

^○Masaya Kobayashi¹, makoto Kondo², hiroshi Sashiyama³ (1.Div. of Gastroenterology,Hyogo College of Medicine, Hyogo, Japan, 2.Div. of Pharmacovigilance,Astellas Pharma Inc.,Tokyo, Japan, 3.Div. of Digestive Surgery, Tsujinaka hospital, Chiba, Japan)