^○Hirohiko Iwasaki (Fujinomachi Clinic,Fuji,Japan)

^○Wataru Ono¹, Toshihiro Nakano², Taro Inoue¹, Hiroshi Yoshinaga², Chie Ueda¹, Eiji Tsubouchi¹, Hiroshi Takihara¹, Akihiro Nakamura¹, Shinichi Baba¹, Tasuke Tanaka¹, Kou Matsuura¹, Shun Abe¹, Shinsuke Hiramatsu¹, Tomoatsu Yoshihara¹ (1.Dept. of Gastroenterology, Kishiwada Tokushukai Hospital, Osaka, Japan, 2.Dept. of Gastroenterology, Suita Tokushukai Hospital, Osaka, Japan)

^○Hiro-o Matsushita, Hiroo Yamano, Kenjiro Yoshikawa, Ryo Takagi, Eiji Harada, Yoshihito Tanaka, Michiko Nakaoka, Ryogo Himori, Yuko Yoshida, Kentaro Sato, Yashushi Imai (Dept. of Gastroenterology, Akita Red Cross Hospital, Akita, Japan)

^○Tomoki Miura, Kiyoaki Honma, Yoshitaka Nawata (Dept. of Terapeutic Endoscopy, Nihonkai General Hosp., Yamagata, Japan)

^○Katsuhisa Noda¹, Takatoshi Kitada², Yasumoto Suzuki³ (1.Noda Genki Clinic, Toyonaka City, Osaka, Japan, 2.Kitada Clinic., Kawanishi City, Hyogo, Japan, 3.Matsushima Clinic, Yokohama City, Kanagawa, Japan)