1. Diabetes Center Shin‐Koga Hospital Kurume Japan
2. Department of Endocrinology and Diabetes, School of Medicine Saitama Medical University Iruma Japan
3. Department of Internal Medicine (I) Osaka Medical and Pharmaceutical University Takatsuki Japan
4. Department of Endocrinology and Metabolism Nagasaki University Hospital Nagasaki Japan
5. Pancreatic Islet Cell Transplantation Center National Center for Global Health and Medicine Tokyo Japan
6. Department of Diabetes and Molecular Genetics Ehime University Graduate School of Medicine Toon Japan
7. Department of Endocrinology, Metabolism and Diabetes Kindai University Faculty of Medicine Osaka Japan
8. Department of Metabolic Medicine, Graduate School of Medicine Osaka University Suita Japan
9. Okinaka Memorial Institute for Medical Research Tokyo Japan
10. Iwate Prefectural University Takizawa Japan
11. Center for Clinical Research Toyama University Hospital Toyama Japan
12. Division of Diabetes and Endocrinology Showa University School of Medicine Tokyo Japan
13. Division of Diabetology and Metabolism, Department of Internal Medicine Tokyo Women's Medical University School of Medicine Tokyo Japan
14. Department of Diabetes, Endocrinology, and Metabolism Kyorin University Mitaka Japan
15. Division of Health Sciences, Department of Public Health Kobe University Graduate School of Health Sciences Kobe Japan
16. Department of Diabetes, Endocrinology, and Metabolism National Center for Global Health and Medicine Tokyo Japan
17. Sakai City Medical Center Sakai Japan