[1] Kindai University Faculty of Medicine,Department of Gastroenterology and Hepatology
[2] National Hospital Organization Minami Wakayama Medical Center,Department of Gastroenterology
[3] Okanami General Hospital,Department of Gastroenterology
[4] Osaka Medical College,2nd Department of Internal Medicine
[5] Japanese Red Cross Wakayama Medical Center,Department of Gastroenterology
[6] Kindai University Hospital,Clinical Research Center
[7] Wakayama Medical University School of Medicine,Second Department of Internal Medicine