1. Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine Center Hospital, Tokyo, Japan
2. Department of Clinical Study and Informatics, Center for Clinical Sciences National Center for Global Health and Medicine, Tokyo, Japan
3. Saitama Citizens Medical Center, Saitama, Japan
4. Department of Endocrinology and Diabetes, Saitama Medical University, Saitama, Japan