1. Division of Health Sciences Osaka University, Graduate School of Medicine Osaka Japan
2. School of Public Health University of California Berkeley California USA
3. Osaka Home Medical Care Clinic Osaka Japan
4. Nakamura Clinic Osaka Japan
5. Hirotani Clinic Osaka Japan
6. Fukuda Clinic Osaka Japan
7. Tamatani Clinic Osaka Japan
8. Okuda Clinic Osaka Japan
9. Ikushima Clinic Osaka Japan
10. Baba Clinic Osaka Japan
11. Nagano Clinic Osaka Japan
12. Yukokai Nakamura Clinic Osaka Japan
13. Department of Geriatric and General Medicine Osaka University, Graduate School of Medicine Osaka Japan
14. Japan Organization of Occupational Health and Safety, Osaka Rosai Hospital Osaka Japan