1. Department of General Internal Medicine Iizuka Hospital Iizuka Japan
2. Department of Gastroenterology Iizuka Hospital Iizuka Japan
3. Department of Clinical Neuroscience and Therapeutics Hiroshima University Graduate School of Biomedical and Health Sciences Hiroshima Japan
4. Department of Nephrology/Clinical Research Support Office Iizuka Hospital Iizuka Japan
5. Department of Healthcare Epidemiology Kyoto University Graduate School of Public Health Kyoto Japan
6. Department of General and Family Medicine Kurume University Medical Center Kurume Japan