1. Department of Health Services Research, Institute of Medicine University of Tsukuba Tsukuba Ibaraki Japan
2. Health Services Research and Development Center University of Tsukuba Tsukuba Ibaraki Japan
3. Department of Primary Care and Medical Education, Institute of Medicine University of Tsukuba Tsukuba Ibaraki Japan
4. Department of Health Services Research, Graduate School of Comprehensive Human Sciences University of Tsukuba Tsukuba Ibaraki Japan
5. Institute for Global Health Policy Research Bureau of International Health Cooperation, National Center for Global Health and Medicine Shinjuku‐ku Tokyo Japan
6. Heisei Medical Welfare Group Research Institute Shibuya‐ku Tokyo Japan
7. Department of Home Healthcare Setagaya Memorial Hospital Setagaya‐ku Tokyo Japan
8. Institute of Gerontology University of Tokyo Bunkyo‐ku Tokyo Japan
9. Institute for Future Initiatives University of Tokyo Bunkyo‐ku Tokyo Japan
10. Department of Health Policy and Management, School of Medicine Keio University Shinjuku‐ku Tokyo Japan
11. School of Medicine Hiroshima University Hiroshima City Hiroshima Japan
12. Department of Public Health Medicine, Institute of Medicine University of Tsukuba Tsukuba Ibaraki Japan
13. Department of Public Health, Graduate School of Medicine Juntendo University Bunkyo‐ku Tokyo Japan
14. Faculty of Pharmaceutical Sciences Teikyo Heisei University Nakano‐ku Tokyo Japan