1. Department of Diabetes Research and Diabetes and Metabolism Information Center, Diabetes Research Center, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
2. Health Management Center, Toranomon Hospital, Tokyo, Japan
3. Department of Endocrinology and Metabolism, Toranomon Hospital, Tokyo, Japan
4. Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine Center Hospital, Tokyo, Japan
5. Division of Diabetes and Metabolism, Iwate Medical University, Morioka, Japan
6. Department of Diabetes and Endocrinology, JR Tokyo General Hospital, Tokyo, Japan
7. Division of Diabetes and Endocrinology, Department of Internal Medicine, Tokyo Yamate Medical Center, Japan Community Health care Organization, Tokyo, Japan
8. Department of Diabetes, the Institute for Adult Diseases, Asahi Life Foundation, Tokyo, Japan
9. Department of Internal Medicine, National Center for Global Health and Medicine Kohnodai Hospital, Chiba, Japan
10. Nagara Medical Center, National Hospital Organization, Gifu, Japan
11. Yutenji Medical Clinic, Tokyo, Japan
12. Kanamachi Yoshida Clinic, Tokyo, Japan
13. National Hospital Organization, Tokyo, Japan
14. Department of Medical Informatics and Economics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
15. Ohta Nishinouchi Hospital, Fukushima, Japan
16. Department of Endocrinology and Diabetes, Saitama Medical University, Saitama, Japan