1. Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
2. Department of Metabolic Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
3. Division of Diabetes, Metabolism, and Endocrinology, Department of Internal Medicine, Iwate Medical University, Yahaba 028-3695, Japan
4. Division of Diabetology, Endocrinology, and Nephrology, Department of Medicine, Shiga University of Medical Sciences, Otsu 520-2192, Japan
5. Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0003, Japan
6. Division of Pediatric Endocrinology and Metabolism, Children’s Medical Center, Osaka City General Hospital, Osaka 534-0021, Japan
7. Department of Metabolism and Diabetes, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan