1. Department of General Pediatrics & Interdisciplinary Medicine, National Center for Child Health and Development (NCCHD), Tokyo, Japan
2. Center for Postgraduate Education and Training, NCCHD, Tokyo, Japan
3. Division of Nephrology and Rheumatology, NCCHD, Tokyo, Japan
4. Department of Molecular Genetics, Wakayama Medical University, Wakayama, Japan
5. Division of Hematology, NCCHD, Tokyo, Japan