[1] Tokyo Med Univ, Dept Gastroenterol & Hepatol, Tokyo, Japan
[2] Tokyo Med Univ, Dept Gastroenterol Endoscopy, 6-7-1,Nishi Shinjuku Ku, Tokyo 1600023, Japan
[3] Natl Ctr Global Hlth & Med, Dept Gastroenterol & Hepatol, Tokyo, Japan
[4] Tokyo Metropolitan Bokutoh Hosp, Dept Gastroenterol, Tokyo, Japan
[5] Kitano Hosp, Tazuke Kofukai Med Res Inst, Dept Gastroenterol & Hepatol, Osaka, Japan
[6] Univ Tokyo, Grad Sch Med, Dept Gastroenterol, Tokyo, Japan
[7] Nippon Med Sch, Grad Sch Med, Dept Gastroenterol, Tokyo, Japan
[8] St Lukes Int Univ, Dept Gastroenterol, Tokyo, Japan
[9] Hiroshima City Asa Citizens Hosp, Dept Gastroenterol, Hiroshima, Japan
[10] Saga Med Ctr Koseikan, Dept Gastroenterol, Saga, Japan
[11] St Marianna Univ, Div Gastroenterol & Hepatol, Dept Internal Med, Sch Med, Kawasaki, Kanagawa, Japan
[12] Nara City Hosp, Dept Gastroenterol & Hepatol, Ctr Digest & Liver Dis, Nara, Japan
[13] Tokyo Shinagawa Hosp, Dept Gastroenterol, Tokyo, Japan
[14] Nagoya Univ Hosp, Dept Endoscopy, Nagoya, Aichi, Japan
[15] Natl Hosp Org Kyoto Med Ctr, Dept Gastroenterol, Kyoto, Japan
[16] Ctr Komagome Hosp, Tokyo Metropolitan Canc & Infect Dis, Dept Gastroenterol, Tokyo, Japan
[17] Oita Univ, Dept Gastroenterol, Oita, Japan
[18] Fukuoka Univ, Dept Gastroenterol, Chikushi Hosp, Fukuoka, Japan
[19] Nippon Med Sch, Chiba Hokusoh Hosp, Dept Gastroenterol, Chiba, Japan
[20] Japanese Red Cross Shizuoka Hosp, Dept Gastroenterol, Shizuoka, Japan
[21] Kawasaki Med Sch, Gen Med Ctr, Div Endoscopy & Ultrasonog, Dept Clin Pathol & Lab Med, Okayama, Japan
[22] Niigata Univ, Grad Sch Med & Dent Sci, Div Gastroenterol, Niigata, Japan
[23] Univ Miyazaki Hosp, Ctr Digest Dis, Dept Gastroenterol & Hepatol, Miyazaki, Japan
[24] Univ Miyazaki Hosp, Div Endoscopy, Miyazaki, Japan
[25] Univ Tsukuba Hosp, Dept Gastroenterol, Ibaraki, Japan
[26] Univ Tsukuba Hosp, Endoscop Ctr, Ibaraki, Japan
[27] Toranomon Gen Hosp, Dept Gastroenterol, Tokyo, Japan
[28] Saiseikai Yokohamashi Tobu Hosp, Emergency & Crit Care Ctr, Yokohama, Kanagawa, Japan
[29] Fujita Hlth Univ Hosp, Dept Emergency Med, Toyoake, Aichi, Japan
[30] Naha City Hosp, Dept Gastroenterol, Okinawa, Japan
[31] Tokyo Saiseikai Cent Hosp, Dept Internal Med, Tokyo, Japan
[32] Shuto Gen Hosp, Dept Gastroenterol, Yamaguchi, Japan
[33] Hirosaki Univ Hosp, Div Endoscopy, Aomori, Japan
[34] Kumamoto Univ, Grad Sch Med Sci, Dept Gastroenterol & Hepatol, Kumamoto, Japan
[35] Natl Hosp Org Fukuokahigashi Med Ctr, Dept Gastroenterol & Hepatol, Fukuoka, Japan
[36] Kyushu Univ, Grad Sch Med Sci, Dept Med & Clin Sci, Fukuoka, Japan
[37] Fukushima Med Univ, Dept Gastroenterol, Fukushima, Japan
[38] Iwate Med Univ, Div Gastroenterol, Dept Internal Med, Morioka, Iwate, Japan
[39] Natl Def Med Coll, Dept Internal Med, Saitama, Japan
[40] Kawasaki Med Sch, Div Endoscopy & Ultrasonog, Dept Clin Pathol & Lab Med, Okayama, Japan
[41] Suita Municipal Hosp, Dept Gastroenterol & Hepatol, Osaka, Japan
[42] Univ Ryukyus Hosp, Dept Endoscopy, Okinawa, Japan
[43] Natl Hosp Org Kyushu Med Ctr, Dept Gastroenterol, Fukuoka, Japan
[44] Fukuoka Univ Hosp, Dept Gastroenterol Endoscopy, Fukuoka, Japan
[45] Kitasato Univ, Sch Med, Dept Gastroenterol, Kitasato, Kanagawa, Japan
[46] Akita Univ, Dept Gastroenterol & Neurol, Grad Sch Med, Akita, Japan
[47] Kagoshima Univ, Grad Sch Med & Dent Sci, Digest & Lifestyle Dis, Kagoshima, Japan
[48] Kagoshima Univ, Grad Sch Med & Dent Sci, Hyg & Hlth Promot Med, Kagoshima, Japan
[49] Kohnodai Hosp, Dept Gastroenterol & Hepatol, Natl Ctr Global Hlth & Med, Chiba, Japan