1. Department of Health Services Research, Faculty of Medicine, University of Tsukuba
2. Health Services Research and Development Center, University of Tsukuba
3. University of Tsukuba Hospital
4. Graduate School of Comprehensive Human Sciences, University of Tsukuba
5. Department of General Internal Medicine, Eastern Chiba Medical Center
6. Research Department, Institute for Health Economics and Policy, Association for Health Economics Research and Social Insurance and Welfare
7. Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science
8. Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo
9. Institute of Gerontology, The University of Tokyo
10. Department of Health Policy and Management, School of Medicine, Keio University
11. Human Care Research Team, Tokyo Metropolitan Institute of Gerontology