1. Department of Pediatrics, Juntendo University School of Medicine
2. Department of Pediatrics, Kurume University
3. Department of Pediatric Cardiology, The Heart Institute of Japan, Tokyo Women's Medical college
4. Department of Cardiology, National Children's Hospital
5. Department of Pediatric Cardiology, National Cardiovascular Center
6. Department of Pediatric Cardiology, Cardiovascular Center, Saitama University School of Medicine