[1] Fujita Hlth Univ, Dept Gastroenterol & Hepatol, Toyoake, Aichi, Japan
[2] Kanazawa Univ, Gastroenterol Dept, Kanazawa, Ishikawa, Japan
[3] Osaka Univ, Gastroenterol & Hepatol, Suita, Osaka, Japan
[4] Hiroshima Prefectural Hosp, Gastroenterol, Minami, Japan
[5] Chiba Univ, Sch Med, Gastroenterol, Chiba, Japan
[6] Ehime Univ, Grad Sch Med, Gastroenterol & Metabol, Toon, Japan
[7] Japanese Red Cross Soc, Himeji Hosp, Internal Med, Himeji, Hyogo, Japan
[8] Jichi Med Univ Hosp, Dept Med, Div Gastroenterol, Shimotsuke, Tochigi, Japan
[9] Kyoto Prefectural Univ Med, Mol Gastroenterol & Hepatol, Kyoto, Japan
[10] Natl Canc Ctr Hosp East, Hepatobiliary & Pancreat Oncol Dept, Kashiwa, Chiba, Japan
[11] Tohoku Univ Hosp, Dept Gastroenterol, Sendai, Miyagi, Japan
[12] Kagawa Univ, Fac Med, Grad Sch Med, Dept Gastroenterol & Neurol, Miki, Kagawa, Japan
[13] Yamagata Univ, Gastroenterol, Fac Med, Yamagata, Japan
[14] Hiroshima Univ Hosp, Collaborat Res Lab Med Innovat, Hiroshima, Japan
[15] Univ Tokyo Hosp, Dept Gastroenterol, Bunkyo ku, Tokyo, Japan
[16] Toranomon Gen Hosp, Hepatol, Minato, Japan
[17] Kanagawa Canc Ctr, Dept Gastroenterol, Yokohama, Kanagawa, Japan
[18] Kindai Univ, Dept Gastroenterol & Hepatol, Fac Med, Osaka, Japan
[19] Yokohama City Univ Med, Dept Biostat, Yokohama, Kanagawa, Japan
[20] NCGM Natl Ctr Global Hlth & Med, Surg, Shinjuku Ku, Tokyo, Japan