1. Department of Endocrinology and Diabetes, School of Medicine Saitama Medical University Saitama Japan
2. Diabetes Center Shin‐Koga Hospital Fukuoka Japan
3. Midori Clinic Nagasaki Japan
4. Pancreatic Islet Cell Transplantation Center National Center for Global Health and Medicine Tokyo Japan
5. Department of Diabetes and Molecular Genetics Ehime University Graduate School of Medicine Ehime Japan
6. Department of Diabetes, Endocrinology and Metabolism Center Hospital of the National Center for Global Health and Medicine Tokyo Japan
7. Department of Diabetes Care Medicine Graduate School of Medicine, Osaka University Osaka Japan
8. Department of Basic Nursing Science, School of Nursing Iwate Prefectural University Iwate Japan
9. Center for Clinical Research Toyama University Hospital Toyama Japan
10. Department of Endocrinology, Metabolism and Diabetes Kindai University Faculty of Medicine Osaka Japan
11. Department of Medicine, Division of Diabetes, Metabolism and Endocrinology Showa University School of Medicine Tokyo Japan
12. Division of Diabetology and Metabolism, Department of Internal Medicine Tokyo Women's Medical University School of Medicine Tokyo Japan
13. Department of Diabetes, Endocrinology and Metabolism Kyorin University School of Medicine Tokyo Japan
14. Department of Public Health, Division of Health Sciences Kobe University Graduate School of Health Sciences Hyogo Japan
15. Department of Internal Medicine (I), Faculty of Medicine Osaka Medical and Pharmaceutical University Osaka Japan