ISHIDA Hideaki¹, ETOU Takeshi¹, ISHII Toru¹, MIYAUCHI Takaharu², NAGANUMA Hiroko³, OHYAMA Yoko⁴, HOSHINO Takao⁵, OOMACHI Kouichi⁶, TAKAHASHI Masato⁷, IZUMI Jyunichi⁸ (1.Department of Gastroenterology, Akita Red Cross Hospital, 2.Department of Radiology, Akita Red Cross Hospital, 3.Department of Gastroenterology, Yokote Municipal Hospital, 4.Department of Medical Laboratory, Akita Kousei Medical Center, 5.Department of Gastroenterology, Akita Kousei Medical Center, 6.Department of Radiology, Akita Kousei Medical Center, 7.Department of Pathology, Akita Kousei Medical Center, 8.Department of Radiology, Yokote Municipal Hospital)

SAKURAI Reo¹, KIYAMA Masaharu², MIYAZAKI Taku³, TANAKA Masatoshi⁴, YOKOKURA Yoshinori³ (1.General Medicine, Yokokura Hospital, 2.Gastroenterology, Yokokura Hospital, 3.Surgery, Ykokura Hospital, 4.Clinical Research Center, Yokokura Hospital)

KANNO Yoshihide, KOZAKAI Fumisato, OGAWA Takahisa, MASU Kaori, KOSHITA Shinsuke, NODA Yutaka, ITO Kei (Department of Gastroenterology, Sendai City Medical Center)

HATTORI Hiroaki¹, NOUMI Takahiro¹, SASAKI Yuuichirou¹, ADACHI Rei¹, OMOSO Ryouko¹, TSUKADA Kaori¹, FUJIHARA Hiromitsu¹, FUJII Youko¹, MURAWAKI Yoshikazu¹, SUGIHARA Takaaki² (1.Tottori Saiseikai-Sakaiminato General Hospital, 2.Department of gastroenterology, Tottori University Hospital)