1. Health Services Research and Development Center University of Tsukuba Tsukuba Ibaraki Japan
2. Department of Nursing, School of Health Sciences Ibaraki Prefectural University of Health Sciences Ami‐machi Ibaraki Japan
3. Department of Health Services Research, Institute of Medicine University of Tsukuba Tsukuba Ibaraki Japan
4. Diabetes and Metabolism Information Center, Research Institute National Center for Global Health and Medicine Tokyo Japan
5. Institute for Global Health Policy Research, Bureau of International Health Cooperation National Center for Global Health and Medicine Tokyo Japan
6. Analytics and Innovation Department Research and Development Group, SMS Co., Ltd. Tokyo Japan