^○Rinako Mizuta, Hiroaki Iwase, Masaaki Shimada, Noboru Hirashima, Masayuki Okeya, Nobumitsu Ryuge, Yuichi Kida, Masaya Esaki, Bunichiro Kato, Noboru Urata, Momoko Goto, Satoshi Unita, Takashi Kondo, Daiki Tanaka (Dept. of Gastroenterology. National Hospital Organization Nagoya National Hospital., Aichi, Japan)

^○Kazuki Maesaka, Masato Komori, Shinnosuke Kudo, Makoto Fukuoka, Shinya Kimura, Kumiko Shirai, Toru Okahara, Yukiko Okuda, Masayoshi Konoshita, Motohiro Hirao, Shunsuke Yamamoto, Masako Nishiyama, Atsushi Hosui, Harumasa Yoshihara (Dept. of Gastroenterology, Osaka Rosai Hospital, Osaka, Japan)

^○Hiroki Endo, Shotaro Umezawa, Atsushi Nakajima (Dept. of Gastroenterology and Hepatology, Yokohama City Univ., Yokohama, Japan)

^○Atsuyo Fujita¹, Yukinori Nakae¹, Konosuke Nakaji¹, Mitsutaka Kumamoto¹, Akiko Shiotani², Kenjiro Tamori³ (1.Endosopy Center, Aishinkai Nakae Hospital, Wakayama, Japan, 2.Department of Gastroenterology, Kawaski Medical School, 3.Deprtment of Internal Medicine, Saiseikai Tondabayashi Hospital)