1. The First Department of Medicine, Wakayama Medical University, Wakayama, Japan.
2. Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
3. Department of Medicine 2, Tokyo Women's Medical University, Tokyo, Japan.
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, Fujita Health University, Toyoake, Japan.
5. Department of Internal Medicine, Keio University, Tokyo, Japan.
6. Department of Clinical and Molecular Endocrinology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
7. Division of Diabetes, Metabolism, and Endocrinology, Department of Medicine, School of Medicine, Toho University, Tokyo, Japan.
8. Department of Endocrinology and Metabolism, Dokkyo Medical University, Mibu, Japan.
9. Department of Endocrinology and Metabolism, University of the Ryukyus, Nishihara, Japan.
10. Second Department of Internal Medicine, Kansai Medical University, Moriguchi, Japan.
11. Translational Research Center, Faculty of Medicine, Kyoto University, Kyoto, Japan.
12. Department of Public Health, Jichi Medical University, Shimotsuke, Japan.
13. Department of Public Health, Saitama Medical University, Moroyama, Japan.