[1] Tokyo Medical and Dental University,Department of Gastroenterology and Hepatology, School of Medicine
[2] Keio University,Center for Diagnostic and Therapeutic Endoscopy, School of Medicine
[3] IBD Center,Department of Gastroenterology and Hepatology
[4] Yokohama City University Medical Center,undefined
[5] IBD Center,undefined
[6] Social Insurance Central General Hospital,undefined
[7] Showa University,undefined