^○Hideyuki Seki, Junichi Suzuki (Dept. of Gastroenterology, KKR Sapporo Medical Center, Sapporo, Japan)

^○Akinori Mizoguchi, Junji Yoshino, Yuichiro Tomomatsu (Dept. of Internal Medicine, Banbuntanehotokukai Hospital,Sch. of Med. Fujita Health Univ., Aichi, Japan)

^○Tamaki Ichiya¹, Kyosuke Tanaka², Peter Thelin Schmidt¹ (1.Karolinska University Hospital, 2.Department of Hematology and Oncology, Mie University Graduate School of Medicine,)

^○Rieko Nakamura¹, Tai Omori², Yuko Kitagawa¹ (1.Dept. of Surgery, Sch. of Med. Keio Univ., Tokyo, Japan, 2.Dept. of Surgery, Kawasaki Municipal Ida Hospital)

^○Saya Tsuda, Reiko Kunisaki, Hideaki Kimura (Yokohama City Univercity Medical Center, Ibd Center, Yokohama, Japan)

^○Masahiro Hata, Naoyoshi Nagata, Junichi Akiyama (Dept. of Gastroenterology, National Center For Global Health and Medicine, Tokyo, Japan)

^○Shinya Izawa^1,2, Yasushi Funaki^1,2, Kunio Kasugai¹ (1.Dept. of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan, 2.Department of Clinical Laboratory, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan)

^○sakiko Naito, Masakatsu Fukuzawa, Takasi Kawai (Endoscopy Center, Tokyo Medical University Hospital, Japan)

^○Shiko Kuribayashi¹, Hiroko Hosaka¹, Akiyo Kawada² (1.Dept. of Gastroenterology, Gunma University Hospital, Maebashi, Japan, 2.Department of Endoscopy and Endoscopic Surgery, Gunma University Hospital, Maebashi, Japan)

^○Hitomi Minami, Hajime Isomoto, Kazuhiko Nakao (Dept. of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan)

^○Hiroki Sato, Masaaki Kobayashi, Shuji Terai (Div. of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Japan)

^○Ryo Ogawa¹, Takashi Abe², Kazunari Murakami¹ (1.Dept. of Gastroenterology, Faculty of Medicine, Oita University, Oita, Japan, 2.Department of Gastroenterology, Koseiren Tsurumi Hospital, Oita, Japan)

^○Shiwaku Hironari¹, Haruhiro Inoue², Yuichi Yamashita¹ (1.Dept. of Gastroenterological Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan, 2.Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan)

^○Kazuhiro Ota^1,2, Toshihisa Takeuchi², Kazuhide Higuchi² (1.The Dept. of Gastroenterology and Hepatology, Shiroyama Hospital, Habikino, Osaka, Japan, 2.The 2nd Department of Internal Medicine, Osaka Medical College, Takatsuki, Osaka, Japan)

^○Kazuya Sumi¹, Haruhiro Inoue¹, Shinei Kudo² (1.Digestive Disease Center, Showa University Koto Toyosu Hospital, Japan, 2.Digestive Disease Center, Showa University Northern Yokohama Hospital)

^○Tatsuya Osuga, Chikara Kadota, Seiichi Hirano (Dept. of Gastroenterology,Aijinkai Takatsuki General Hospital, Osaka, Japan)