^○Mizuno Chiemi¹, izumi tanaka¹, naoki sawai¹, tomoko ueno¹, keiichiro okuda¹, ritsu yasuda¹, yukie hinotsume¹, ryuji horimoto¹, hirohisa oya¹, ichiro amano¹, kojiro seki¹, junko matsumoto¹, masayuki mizuno¹, toshihide shima¹, takeshi okanoue¹, kyoko sakai² (1.Dept. of Gastroenterology and Hepatology, Saiseikai Suita Hospital, Suita, Japan., 2.Department of Laboratory medicine, Saiseikai Suita Hospital, Suita, Japan)

^○atsuyuki onishi^1,2, Ryouichi Nozaki², Kazutaka Yamada² (1.Onishi Hospital, Japan, 2.Takano Hospital)

^○Keiichi Ashikari, Hideyuki Chiba, Daisuke Kurihara, Takuma Suto, Naoya Kawano, Shihoko Seki, Shinshuke Tsuruta, Akihiro Takahashi, Tomonori Ida, Taiki Morohashi, Toru Goto (Omori Red Cross Hospital, Dept. of Gastroenterology, Tokyo, Japan)

^○Tomoya Saito¹, Kaoru Yokoyama¹, shohei ooka¹, Kana Kawagishi¹, Miwa Sada¹, Kiyonori Kobayashi², Wasaburo Koizumi¹ (1.Dept. of Gastroenterology,Kitasato University School of Medeicine,Kanagawa,Japan, 2.Research and Development Center for New Medical Frontiers,Kitasato university School of medeicine,Kanagawa,Japan)

^○Kenichi Utano, Noriyuki Isohata, Shungo Endo, Kazutomo Togashi (Dept. of Coloproctology, Aizu Medical Center, Fukushima Medical University, Japan)