[1] Teikyo University School of Medicine,Department of Medicine
[2] Hiroshima University,Department of General Internal Medicine, Graduate School of Biomedical & Health Sciences
[3] Juntendo University,Department of Gastroenterology, Graduate School of Medicine
[4] Nagoya City University,Department of Gastroenterology
[5] Chiba University,Department of Medicine and Clinical Oncology, Graduate School of Medicine
[6] Teikyo University,Faculty of Medical Technology