1. Department of Rheumatology, Endocrinology and Nephrology Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
2. Division of Diabetes and Obesity Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
3. Clinical Research and Medical Innovation Center Hokkaido University Hospital Sapporo Japan
4. Department of Endocrinology and Metabolism Graduate School of Medicine Fujita Health University Toyoake Japan
5. Department of Endocrinology and Metabolism Graduate School of Medicine Yokohama City University Yokohama Japan