1. Diabetes and Metabolism Information Center Research Institute National Center for Global Health and Medicine Shinjuku‐Ku Japan
2. Institute for Global Health Policy, Bureau of International Health Cooperation National Center for Global Health and Medicine Shinjuku‐Ku Japan
3. Health Services Research and Development Center University of Tsukuba Tsukuba Japan
4. Department of Health Services Research Faculty of Medicine University of Tsukuba Tsukuba Japan
5. Department of Public Health/Health Policy Graduate School of Medicine The University of Tokyo Bunkyo‐Ku Japan
6. Department of Public Health and Occupational Medicine Graduate School of Medicine Mie University Tsu‐shi Japan
7. Diabetes Research Center Research Institute National Center for Global Health and Medicine Shinjuku‐Ku Japan