^○Atsushi Yamaguchi, Sumio Iio, Akiyoshi Tsuboi, ken Yamashita, Takeshi Mori, Kazuki Boda, Toshiki Yamaguchi, Toshio Kuwai, Hirotaka Kono, Hiroshi Kono (Dep. of Gastroenterology and Hepatology Kure Medical Center and Chugoku Cancer Center, Kure City, Hiroshima, Japan)

^○Kohei Yamakawa, Akira Kurita, Kosuke Kawaji, Makoto Sono, Takanori Harada, Takashi Ito, Satoshi Nishimura, Kaeko Hashimoto, Kotaro Watanabe, Noriyo Kimura, Masaki Watanabe, Yasushi Kudo, Atsushi Yamauchi, Koichiro Kawano, Tadayuki Ko, Masanori Asada, Toyokazu Fukunaga, Kiyotaka Kawaguchi, Shujiro Yazumi (Dept. of Gatroenterology, Kitano Hospital, Osaka, Japan)

^○Tomoki Kouno¹, Makoto Oryu¹, Kazunori Sugama¹, Ayako Fujimori¹, Hirohito Mori², Hideki Kobara², Noriko Nishiyama², Shintaro Fujihara², Taiga Chiyo², Tae Matsunaga², Maki Ayaki², Tatsuo Yachida², Tsutomu Masaki² (1.Dept. of Gastroenterology, Kagawa Saseikai Hospital, Kagawa, Japan, 2.Dept. of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University., Kagawa, Japan)

^○Rei Suzuki¹, Tadayuki Takagi¹, Naoki Konno¹, Mitsuru Sugimoto¹, Ai Sato¹, Ko Watanabe¹, Jun Nakamura¹, Yuichi Waragai¹, Hitomi Kikuchi¹, Takuto Hikichi², Katsutoshi Obara², Hiromasa Ohira¹ (1.Fukushima Medical University School of Medicine, Dept. of Gastroenterology and Rheumatology, Japan, 2.Fukushima Medical University Hospital, Department of Endoscopy)

^○Kei Saito, Masato Matsuyama, Ikuhiro Yamada, Takashi Sasaki, Masato Ozaka, Kouichi Takano, Hiroshi Ishii, Naoki Sasahira (Gastroenterological Medicine, Cancer Institute Hospital of Japanese Foundation For Cancer Research, Tokyo, Japan)