1. 2nd Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
2. Department of Internal Medicine, Futagawa Hospital, Japan
3. International Center, Hamamatsu University School of Medicine, Japan
4. Department of Pediatrics, Hamamatsu University School of Medicine, Japan
5. Department of Biochemistry, Hamamatsu University School of Medicine, Japan
6. Department of Diabetes and Endocrinology, Nagoya City University Mirai Kousei Hospital, Japan