1. The Hospital for Sick Children University of Toronto Toronto ON Canada
2. Boston Children’s HospitalHarvard Medical School Boston MA
3. Advocate Children’s Hospital Oak Lawn IL
4. Institute of Cardiology of Rio Grande do Sul/University Foundation of Cardiology Porto Alegre Brazil
5. National Institute of Cardiology Mexico City Mexico
6. Rady Children’s Hospital San Diego CA
7. Children’s Heart CentreBC Children’s Hospital Vancouver BC Canada
8. The Cardiac Institute University of Tennessee Health Science Center Memphis TN
9. Janssen Research and Development, LLC Raritan NJ
10. Duke University Medical Center Durham NC