1. Division of Endoscopy and Ultrasonography, Department of Clinical Pathology and Laboratory Medicine Kawasaki Medical School General Medical Center Okayama Japan
2. Department of Health Care Medicine Kawasaki Medical School General Medical Center Okayama Japan
3. Department of Health Care Medicine Kawasaki Medical School Kurashiki Japan
4. Division of Endoscopy and Ultrasonography, Department of Laboratory Medicine Kawasaki Medical School Kurashiki Japan
5. Department of General Internal Medicine 2 Kawasaki Medical School General Medical Center Okayama Japan