[1] Tottori Univ, Fac Med, Div Gastroenterol & Nephrol, Yonago, Tottori, Japan
[2] Shimane Univ, Dept Internal Med 2, Fac Med, Izumo, Shimane, Japan
[3] Matsue Red Cross Hosp, Div Gastroenterol, Matsue, Shimane, Japan
[4] Shimane Univ Hosp, Gastrointestinal Endoscopy, Izumo, Shimane, Japan
[5] Tottori Red Cross Hosp, Div Gastroenterol, Tottori, Japan
[6] Shimane Prefectural Cent Hosp, Div Gastroenterol, Izumo, Shimane, Japan
[7] Tottori Prefectural Cent Hosp, Div Gastroenterol, Tottori, Japan
[8] Yonago Med Ctr, Div Gastroenterol, Yonago, Tottori, Japan
[9] Hamada Med Ctr, Div Gastroenterol, Hamada, Japan
[10] Hakuai Hosp, Div Gastroenterol, Yonago, Tottori, Japan
[11] Sanin Rosai Hosp, Div Gastroenterol, Yonago, Tottori, Japan
[12] Sakaiminato Saiseikai Gen Hosp, Div Gastroenterol, Sakaiminato, Japan
[13] Izumo City Gen Med Ctr, Div Internal Med, Izumo, Shimane, Japan
[14] Izumo Tokushukai Hosp, Endoscop Ctr, Izumo, Shimane, Japan
[15] Tottori Prefectural Kosei Hosp, Div Gastroenterol, Kurayoshi, Japan
[16] Matsue City Hosp, Div Gastroenterol, Matsue, Shimane, Japan
[17] Steel Hirohata Mem Hosp, Himeji, Hyogo, Japan