Naoki MATSUMOTO, Masahiro OGAWA, Seiichiro SUDA, Yu TAMURA, Masahiro KANEKO, Yukinobu WATANABE, Shuzo NOMURA, Mariko FUJISAWA, Ryota MASUZAKI, Hirofumi KOGURE (Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine)

Shunsuke OMOTO, Mamoru TAKENAKA, Akihiro YOSHIDA, Tomohiro FUKUNAGA, Hidekazu TANAKA, Kouta TAKASHIMA, Tomohiro YAMAZAKI, Kousuke MINAGA, Ken KAMATA, Masatoshi KUDO (Gastroenterology and Hepatology, Kindai University Faculty of Medicine)

Jun YASHIKA, Takahiro NISHIKAWA, Asuka NAGURA, Naohiro YANAGISAWA, Mari TAJIMA, Yuki SUGIHARA, Makoto HORI, Moe SIBATA, Kazuki SAITOU, Kouji NONOGAKI (Gastroenterology, Daido Hospital)

Takuya TAKAYANAGI, Noriki KASUGA, Ken ISHII, Yusuke SEKINO, Hajime NAGASE (Gastroenterology, Yokohama Rosai Hospital)

Hiroko NAGANUMA¹, Hideaki ISHIDA², Masato FUNAOKA¹, Yo KOMATU¹, Jyunichi IZUMI³, Norihito ISE⁴, Makoto YOSHIDA⁵, Yu KANEKO⁶, Takako WATANABE⁷, Yoko OHYAMA⁸ (1.Department of Gastroenterology, Yokote Municipal Hospital, 2.Department of Gastroenterology, Akita Red Cross Hospital, 3.Department of Radiology, Yokote Municipal Hospital, 4.Department of Surgery, Yokote Municipal Hospital, 5.Department of Pathology, Akita University School of Medicine, 6.Department of Clinical Laboratory, Yuri General Hospital, 7.Department of Clinical Laboratory, Akita Red Cross Hospital, 8.Department of Clinical Laboratory, Akita Kousei Medical Center)