^○Leo Taniguchi, Hitoshi Kuriyama, Mai Iwase, Aya Iwasaki, Akihiro Suzuki, Eri Uchida, Takashi Uchiyama, Yoriko Murata, Yasuo Hata (Gastroenterology Div. of Chigasaki Municipal Hospital, Chigasaki, Japan)

^○Ryo Igarashi, Atsushi Irisawa, Goro Shibukawa, Yoko Abe, Koh Imbe, Koki Hoshi, Akane Yamabe (Dept. of Gastroenterology, Fukushima Medical University, Aizu Medical Center, Aizuwakamatsu, Japan)

^○Yoshiaki Sugiyama, Masami Ijiri, Shinya Serikawa, Yasuaki Suzuki (Dept. of Gastroenterology, Nayoro City General Hospital, Hokkaido, Japan)

^○Mayuko Miyamoto, Yoshiaki Shibata, Hirohito Sano, Naoko Tamaki (Dep. of Gastroenterology, Tama-Hokubu Medical Center, Tokyo Metropolitan Health and Medical Treatment Corporation, Tokyo, Japan)

^○Hiroyoshi Iwagami, Yuki Hayashi, Soichiro Umemura, Maiko Ikenouchi, tomonori masuda, Tomoki Nakai, Tatsuya Ishii, Satoshi Ogawa, Yohei Yabuuchi, Hisakazu Matsumoto, mio taki, Shunjiro Azuma, Sakiko Ota, Kosuke Minaga, Keiichi Hatamaru, Yasuki Nakatani, Takuji Akamatsu, Takeshi Seta, Shunji Urai, Yoshito Uenoyama, Yukitaka Yamashita (Dept. of Gastroenterology and Hepatology, Wakayama Medical Center Japanese Redcross Society, Wakayama, Japan)