1. Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Iwate Medical University, Japan
2. Department of Ophthalmology, School of Medicine, Iwate Medical University, Japan
3. Division of Medical Biochemistry, School of Pharmacy, Iwate Medical University, Japan
4. Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Japan
5. Clinical Genetics Center, Gifu University Hospital, Japan