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 Centre Hokkaido University Hospital Sapporo Japan
3. Kurihara Clinic Sapporo Japan
4. Aoki Clinic Sapporo Japan
5. Division of Diabetes and Obesity Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan