1. Department of Hematology, Endocrinology & Metabolism Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503 Japan
2. Fujii Memorial Institute of Medical Sciences, Tokushima University, Tokushima 770-8503, Japan
3. Department of Pediatrics, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
4. Third Department of Medicine, Teikyo University Chiba Medical Center, Ichihara 299-0111, Japan
5. Internal Medicine 1, Shimane University Faculty of Medicine, Izumo 693-8501, Japan
6. Department of Endocrinology, Chiba Children’s Hospital, Chiba 266-0007, Japan
7. Department of Bone and Mineral Research, Research Institute, Osaka Medical Center for Maternal and Child Health, Izumi 594-1101, Japan
8. Department of Public Health, Saitama Medical University Faculty of Medicine, Iruma 350-0495, Japan