OKABE Yoshihiro¹, HIRATA Yuichi¹, ORITA Daisuke¹, EZAKI Takeshi² (1.Department of Gastroenterology and Hepatology, Kakogawa Central City Hospital, 2.Department of Gastroenterology and Hepatology, Kobe Medical Center)

OGAWA Masahiro, HIRAYAMA Midori, SHIOZAWA Katsuhiko, RYUZAKI Hitomi, OSHIRO Syu, MINAMIKAWA Risa, MATSUMOTO Naoki, NAKAGAWARA Hiroshi, GOTO Iori, YAMAMOTO Yoshinobu (Gastroenterology, Nihon University Hospital)

SOFUNI Atsushi, FUJITA Mitsuru, TSUCHIYA Takayoshi, ISHII Kentaro, TANAKA Reina, TONOZUKA Ryousuke, HONJO Mitsuyosi, MUKAI Shuntaro, ITOI Takao (Gastroenterology and Hepatology, Tokyo Medical University)

YAMASHITA Yasunobu (Second Department of Internal Medicine, Wakayama Medical University)

OHNO Eizaburo¹, HIROOKA Yoshiki², KAWASHIMA Hiroki¹, ISHIKAWA Takuya¹, ISHIZU Youji¹, KUZUYA Teiji¹, NAKAMURA Masanao¹, HONDA Takashi¹ (1.Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine., 2.Department of Endoscopy, Nagoya University Hospital)

MORI Hideaki (the Third Department of Internal Medicine, Kyorin University School of Medicine)