[1] Saga Ken Med Ctr Koseikan, Dept Gastroenterol, 400 Nakabaru, Kasemachi, Saga 8408571, Japan
[2] Saga Ken Med Ctr Koseikan, Dept Med Res Inst, Saga, Japan
[3] Univ Tokyo, Grad Sch Med, Dept Gastroenterol, Tokyo, Japan
[4] Kawasaki Med Sch, Gen Med Ctr, Div Endoscopy & Ultrasonog, Dept Clin Pathol & Lab Med, Okayama, Japan
[5] Tokyo Metropolitan Bokutoh Hosp, Dept Gastroenterol, Tokyo, Japan
[6] Kitano Hosp, Tazuke Kofukai Med Res Inst, Dept Gastroenterol & Hepatol, Osaka, 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] St Marianna Univ, Sch Med, Div Gastroenterol & Hepatol, Dept Internal Med, Yokohama, Kanagawa, Japan
[11] Nara City Hosp, Ctr Digest & Liver Dis, Dept Gastroenterol & Hepatol, Nara, Japan
[12] Tokyo Shinagawa Hosp, Dept Gastroenterol, Tokyo, Japan
[13] Nagoya Univ Hosp, Dept Endoscopy, Nagoya, Aichi, Japan
[14] Natl Hosp Org Kyoto Med Ctr, Dept Gastroenterol, Kyoto, Japan
[15] Komagome Hosp, Tokyo Metropolitan Canc & Infect Dis Ctr, Dept Gastroenterol, Tokyo, Japan
[16] Oita Univ, Dept Gastroenterol, Oita, Japan
[17] Fukuoka Univ, Chikushi Hosp, Dept Gastroenterol, Fukuoka, Japan
[18] Chiba Hokusoh Hosp, Nippon Med Sch, Dept Gastroenterol, Chiba, Japan
[19] Japanese Red Cross Shizuoka Hosp, Dept Gastroenterol, Shizuoka, Japan
[20] Niigata Univ, Grad Sch Med & Dent Sci, Div Gastroenterol, Niigata, Japan
[21] Univ Miyazaki Hosp, Ctr Digest Dis, Dept Gastroenterol & Hepatol, Miyazaki, Japan
[22] Univ Miyazaki Hosp, Div Endoscopy, Miyazaki, Japan
[23] Univ Tsukuba, Dept Gastroenterol, Ibaraki, Japan
[24] Univ Tsukuba Hosp, Div Endoscop Ctr, Ibaraki, Japan
[25] Toranomon Gen Hosp, Dept Gastroenterol, Tokyo, Japan
[26] Saiseikai Yokohamashi Tobu Hosp, Emergency & Crit Care Ctr, Yokohama, Kanagawa, Japan
[27] Fujita Hlth Univ Hosp, Dept Emergency Med, Toyoake, Aichi, Japan
[28] Naha City Hosp, Dept Gastroenterol, Okinawa, Japan
[29] Tokyo Saiseikai Cent Hosp, Dept Internal Med, Tokyo, Japan
[30] Shuto Gen Hosp, Dept Gastroenterol, Yamaguchi, Japan
[31] Hirosaki Univ Hosp, Div Endoscopy, Aomori, Japan
[32] Kumamoto Univ, Grad Sch Med Sci, Dept Gastroenterol & Hepatol, Kumamoto, Japan
[33] Natl Hosp Org Fukuokahigashi Med Ctr, Dept Gastroenterol & Hepatol, Fukuoka, Japan
[34] Kyushu Univ, Grad Sch Med Sci, Dept Med & Clin Sci, Fukuoka, Japan
[35] Fukushima Med Univ Hosp, Dept Endoscopy, Fukushima, Japan
[36] Iwate Med Univ, Dept Internal Med, Div Gastroenterol, Iwate, Japan
[37] Natl Def Med Coll, Dept Internal Med, Saitama, Japan
[38] Kawasaki Med Sch, Dept Clin Pathol & Lab Med, Div Endoscopy & Ultrasonog, Okayama, Japan
[39] Suita Municipal Hosp, Dept Gastroenterol & Hepatol, Osaka, Japan
[40] Univ Ryukyus Hosp, Dept Endoscopy, Okinawa, Japan
[41] Natl Hosp Org Kyushu Med Ctr, Dept Gastroenterol, Fukuoka, Japan
[42] Fukuoka Univ Hosp, Dept Gastroenterol Endoscopy, Fukuoka, Japan
[43] Kitasato Univ, Sch Med, Dept Gastroenterol, Kanagawa, Japan
[44] Akita Univ, Grad Sch Med, Dept Gastroenterol & Neurol, Akita, Japan
[45] Kagoshima Univ, Grad Sch Med & Dent Sci, Digest & Lifestyle Dis, Kagoshima, Japan
[46] Tokyo Med Univ, Dept Gastroenterol Endoscopy, Tokyo, Japan
[47] Natl Ctr Global Hlth & Med, Dept Gastroenterol & Hepatol, Tokyo, Japan