1. Department of Health Data Science, Yokohama City University Graduate School of Data Science, Yokohama, Japan.
2. Integrity Healthcare Co., Ltd., Tokyo, Japan.
3. Diabetes and Metabolism Information Center, National Center for Global Health and Medicine, Tokyo, Japan.
4. Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine, Tokyo, Japan.
5. Department of Health Services Research, University of Tsukuba, Ibaraki, Japan.
6. Department of Public Health, School of Medicine, Yokohama City University, Yokohama, Japan.
7. Diabetes Research Centre, National Center for Global Health and Medicine, Tokyo, Japan.