[1] Fujita Hlth Univ, Teaching Hosp 2, Dept Gastroenterol, Nagoya, Aichi, Japan
[2] Tohoku Univ, Div Gastroenterol, Grad Sch Med, Sendai, Miyagi, Japan
[3] Toho Univ, Div Gastroenterol & Hepatol, Omori Med Ctr, Tokyo, Japan
[4] Nagoya City Univ, Dept Community Based Med Educ, Grad Sch Med Sci, Nagoya, Aichi, Japan
[5] Hiroshima Univ, Dept Gen Internal Med, Grad Sch Med Sci, Hiroshima, Japan
[6] Kyorin Univ, Dept Surg, Sch Med, Tokyo, Japan
[7] Kindai Univ, Dept Surg, Sch Med, Osakasayama, Japan
[8] Kyoto Prefectural Univ Med, Dept Gastroenterol & Hepatol, Kyoto, Japan
[9] Nagoya City Univ, Dept Gastroenterol & Metab, Grad Sch Med Sci, Nagoya, Aichi, Japan
[10] Fujita Gen Hosp, Dept Gastroenterol, Fukushima, Japan
[11] Shinshu Univ, Dept Gastroenterol, Sch Med, Matsumoto, Nagano, Japan
[12] Gifu Municipal Hosp, Dept Gastroenterol, Gifu, Japan
[13] Toho Univ, Div Gastroenterol & Hepatol, Dept Internal Med, Ohashi Med Ctr, Tokyo, Japan
[14] Showa Univ, Dept Gastroenterol, Fujigaoka Hosp, Yokohama, Kanagawa, Japan
[15] Hiroshima Univ Hosp, Dept Gastroenterol & Metab, Hiroshima, Japan
[16] Fukuoka Univ, Dept Gastroenterol, Chikushi Hosp, Fukuoka, Japan
[17] Hokkaido Hosp, Community Hlth Care Org JCHO, Div Gastroenterol & Hepatol, Sapporo, Hokkaido, Japan
[18] Univ Tokyo, Grad Sch Med, Dept Gastroenterol, Tokyo, Japan
[19] Shimane Univ Hosp, Ctr Canc, Izumo, Shimane, Japan
[20] Japanese Red Cross Nagasaki Genbaku Hosp, Nagasaki, Japan
[21] Oita Univ, Dept Gastroenterol, Yufu, Japan
[22] Univ Miyazaki, Dept Surg, Miyazaki, Japan
[23] Iwate Med Univ, Div Gastroenterol, Dept Internal Med, Morioka, Iwate, Japan
[24] Iwate Cent Prefectural Hosp, Dept Gastroenterol, Morioka, Iwate, Japan
[25] NHO Mie Chuo Med Ctr, Dept Gastroenterol, Tsu, Mie, Japan
[26] Nagoya Univ Hosp, Dept Endoscopy, Nagoya, Aichi, Japan
[27] Natl Hosp Org Fukuoka Higashi Med Ctr, Dept Gastroenterol & Hepatol, Koga, Japan
[28] Konankosei Hosp, Konan, Japan
[29] Hyogo Coll Med, Dept Internal Med, Div Hepatobiliary & Pancreat Dis, Nishinomiya, Hyogo, Japan
[30] Kitano Hosp, Ctr Digest Dis, Osaka, Japan
[31] Ina Cent Hosp, Ina, Saitama, Japan
[32] Kyushu Univ, Grad Sch Med Sci, Dept Surg, Fukuoka, Fukuoka, Japan
[33] Kyushu Univ, Grad Sch Med Sci, Dept Oncol, Fukuoka, Fukuoka, Japan