1. Departments of Metabolic Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
2. Department of Medicine, Nissay Hospital, Osaka, Japan
3. Department of Internal Medicine, Osaka Police Hospital, Osaka, Japan
4. Department of Internal Medicine, NTT West Osaka Hospital, Osaka, Japan
5. Department of Diabetes and Endocrinology, Kansai-Rosai Hospital, Hyogo, Japan
6. Department of Endocrinology and Metabolism, Ikeda Munisipal Hospital, Osaka, Japan
7. Diabetes Center, Toyonaka Municipal Hospital, Osaka, Japan
8. Department of Endocrinology and Metabolism, Sumitomo Hospital, Osaka, Japan
9. Department of Internal Medicine, Nishinomiya Municipal Central Hospital, Hyogo, Japan
10. Department of Internal Medicine, Osaka Rosai Hospital, Osaka, Japan
11. Department of Diabetes and Endocrinology, Osaka General Medical Center, Osaka, Japan
12. Department of Internal Medicine of Endocrinology and Metabolism, National Hospital Organization, Osaka Minami Medical Center, Osaka, Japan
13. Department of Internal Medicine, Kawasaki Hospital, Hyogo, Japan
14. Diabetes Center, National Hospital Organization Osaka National Hospital, Osaka, Japan