^○Yasuaki Motomura¹, Kazuya Akahoshi¹, Kiyoshi Kajiyama² (1.Dept. of Gastroenterology, Aso Iizuka Hospital, Fukuoka, Japan, 2.Dept. of Surgery, Aso Iizuka Hospital, Fukuoka, Japan)

^○Yuichi Takano, Masatsugu Nagahama, Eiichi Yamamura, Naotaka Maruoka, Hiroshi Takahashi (Div. of Gastroenterology, Dept. of Internal Medicine, Showa University Fujigaoka Hospital, Yokohama, Kanagawa, Japan.)

^○Atsushi Minami[^{1,2,3,4,5,6,7}, Hiroshi Yamase⁴, Eiji Komatsu², Makoto Seki⁵, Toshio Yamada¹ (1.Tokyo Rinkai Hospital,Tokyo,Japan, 2.Nishiyokohama International Hospital,Yokohama,Japan, 3.Hamamatsu Redcross Hospital,Hamamatsu,Japan, 4.Heiwadai Hospital,Abiko,Japan, 5.Mitaka chuo Hospital,Mitaka,Japan, 6.Hashimoto Hospital,Mitoyo,Japan, 7.Ohta Hospital,Higashikagawa,Japan)

^○Hiroyuki Hisai¹, Yuuki Ikeda¹, Yutaka Koshiba¹, Tasuku Hirako¹, Etsu Miyazaki², Shogo Miura³ (1.Dept. of Gastroenterology, Japanese Red Cross Date General Hospital, Date, Japan, 2.Dept. of Internal Medicine, Japanese Red Cross Date General Hospital, Date, Japan, 3.Dept. of Hematology and Oncology, Sapporo Medical Univ. Sch. of Med., Sapporo, Japan)

^○Hiroyuki Hisai¹, Yuuki Ikeda¹, Yutaka Koshiba¹, Etsu Miyazaki², Shogo Miura³ (1.Dept. of Gastroenterology, Japanese Red Cross Date General Hospital, Date, Japan, 2.Dept. of Internal Medicine, Japanese Red Cross Date General Hospital, Date, Japan, 3.Dept. of Hematology and Oncology, Sapporo Medical Univ. Sch. of Med., Sapporo, Japan)

^○Hidetaka Matsuda, Masahiro Otani, Yasunari Nakamoto, Takuto Nosaka, Katsushi Hiramatsu, Tomoyuki Nemoto, Hiroyuki Suto (Second Dept. of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan)