1. Department of Rheumatology, Endocrinology and Nephrology Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
2. Clinical Research and Medical Innovation Center Hokkaido University Hospital Sapporo Japan
3. Department of Diabetes and Endocrinology Sapporo City General Hospital Sapporo Japan
4. Sapporo Diabetes and Thyroid Clinic Sapporo Japan
5. Department of Diabetes and Endocrinology Sapporo Medical Center NTT East Corporation Sapporo Japan
6. Division of Diabetes and Obesity Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan