1. Department of General Medicine HITO Medical Center Ehime Japan
2. Department of Family Medicine, General Practice and Community Health, Faculty of Medicine University of Tsukuba Ibaraki Japan
3. Department of General Internal Medicine Kameda Medical Center Chiba Japan
4. Department of General Internal Medicine Aso Iizuka Hospital Fukuoka Japan
5. Department of General Internal Medicine Shonan Kamakura General Hospital Kanagawa Japan
6. Department of Nephrology Endocrinology and Diabetes, Tokyo Bay Urayasu Ichikawa Medical Center Chiba Japan
7. Department of Palliative Medicine Kobe University Graduate School of Medicine Hyogo Japan
8. Department of General Medicine Tsukuba Medical Center Hospital Ibaraki Japan
9. Department of Internal Medicine Tokyo Bay Urayasu Ichikawa Medical Center Chiba Japan
10. Department of General Internal Medicine Akashi Medical Center Hyogo Japan
11. Department of General Medicine Tsukuba University Hospital Ibaraki Japan
12. Department of Medicine, Muribushi Okinawa Center for Teaching Hospitals Okinawa Japan