1. Department of Pediatric Cardiology, Tokyo Women’s Medical University
2. Division of Pediatric Cardiology, Sakakibara Heart Institute
3. Division of Cardiology, National Center for Child Health and Development
4. Division of Cardiology, Shizuoka Children’s Hospital
5. Department of Pediatrics, Tokyo University
6. Department of Pediatrics, Tsukuba University
7. Division of Cardiology, Tokyo Metropolitan Children’s Medical Center
8. Department of Pediatrics, Nihon Medical School
9. Division of Cardiology, Ibaraki Children’s Hospital