[1] Osaka Univ, Grad Sch Med, Dept Gastroenterol & Hepatol, 2-2 K1 Yamadaoka, Suita, Osaka 5650871, Japan
[2] Hyogo Med Univ, Dept Internal Med, Div Gastroenterol & Hepatol, Nishinomiya, Japan
[3] Osaka Rosai Hosp, Dept Gastroenterol & Hepatol, Sakai, Japan
[4] Natl Hosp Org, Osaka Natl Hosp, Osaka, Japan
[5] Toyonaka City Hosp, DEPT RADIOL, TOYONAKA, Japan
[6] Osaka Gen Med Ctr, Dept Gastroenterol, Osaka, Japan
[7] Osaka Police Hosp, Dept Gastroenterol, Osaka, Japan
[8] Natl Hosp Org, Dept Pathol, Kawachi Nagano, Japan
[9] Kansai Rosai Hosp, Dept Gastroenterol Surg, Amagasaki, Japan
[10] Ikeda City Hosp, Dept Gastroenterol, Ikeda, Japan
[11] Itami City Hosp, Dept Gastroenterol & Hepatol, Itami, Japan
[12] Higashiosaka City Med Ctr, Dept Gastroenterol, Higashiosaka, Japan
[13] Otemae Hosp, Dept Gastroenterol, Osaka, Japan
[14] Nishinomiya Municipal Cent Hosp, Dept Gastroenterol, Nishinomiya, Japan
[15] Japan Community Healthcare Org Osaka Hosp, Dept Gastroenterol, Osaka, Japan
[16] Daini Osaka Police Hosp, Dept Gastroenterol, Osaka, Japan
[17] Hyogo Prefectural Nishinomiya Hosp, Dept Gastroenterol, Nishinomiya, Japan
[18] Saiseikai Senri Hosp, Dept Gastroenterol, Suita, Japan
[19] Yao Municipal Hosp, Dept Gastroenterol, Yao, Japan
[20] Osaka Univ, Grad Sch Med, Dept Social & Environm Med, Environm Med & Populat Sci, Suita, Osaka, Japan