1. Division of Nephrology & Endocrinology, Department of Medicine, University of Tokyo Hospital
2. Department of Pediatrics, Osaka University Graduate School of Medicine
3. Department of Endocrinology/Metabolism and Hematology/Oncology, Shimane University School of Medicine
4. Department of Bone and Mineral Research, Osaka Medical Centre for Maternal and Child Health
5. Department of Pediatrics, Okayama University Graduate School of Medicine and Dentistry
6. Third Department of Medicine, Teikyo University School of Medicine Ichihara Hospital
7. Department of Pediatrics, Chiba University Graduate School of Medicine
8. Department of Medicine and Bioregulatory Sciences, University of Tokushima Graduate School of Medical Sciences