1. The Heart CenterNationwide Children's Hospital Columbus Ohio
2. Department of Congenital Heart Disease/Pediatric CardiologyDeutsches Herzzentrum Berlin Berlin Germany
3. German Center of Cardiovascular Research Berlin Germany
4. Department of CardiologySeattle Children's Hospital Seattle Washington
5. Division of Cardiology, Department of PediatricsRady Children's Hospital and University of California San Diego San Diego California
6. The Division of Cardiology, The Labatt Family Heart CenterThe Hospital for Sick Children Toronto Canada
7. Division of Cardiology, Carman and Ann Adams Department of PediatricsChildren's Hospital of Michigan Detroit Michigan
8. Department of Pediatric CardiologyMedical University of South Carolina Charleston South Carolina
9. Division of Pediatric CardiologyColumbia University Medical Center New York New York
10. Division of Cardiology, Department of PediatricsUniversity of Texas Southwestern and the Heart Center at Children's Health Dallas Texas
11. Coronary and Structural Heart Clinical Department Santa Rosa California
12. Deutsches Herzzentrum München, Klinik für Kinderkardiologie und angeborene HerzfehlerTechnische Universität München Munich Germany
13. Department of Cardiothoracic Surgery, Lucille Packard Children's HospitalStanford University School of Medicine Palo Alto California