1. Division of Cardiology, Department of Pediatrics; The Children's Hospital, University of Colorado; Denver Colorado USA
2. Division of Cardiology, Department of Pediatrics; Children's Hospital of NY-Presbyterian; New York New York USA
3. Division of Cardiology, Department of Pediatrics; Primary Children's Hospital; Salt Lake City Utah USA
4. Division of Cardiology, Department of Pediatrics; The Children's Memorial Health Insitute; Warsaw Poland
5. Division of Cardiology, Department of Pediatrics; University of California; San Francisco California USA
6. Division of Cardiology, Department of Pediatrics; C. S. Mott Children's Hospital; Ann Arbor Michigan USA
7. Division of Cardiology, Department of Pediatrics; Stanford University; Palo Alto California USA
8. Division of Cardiology, Department of Pediatrics; Georg-August-University; Göttingen Germany
9. Division of Cardiology, Department of Pediatrics; Children's Heart Center; Seattle Washington USA
10. Division of Cardiology, Department of Pediatrics; Children's Hospital; Los Angeles California USA
11. Division of Cardiology, Department of Pediatrics; University Hospital of Cologne; Koln Germany
12. Division of Cardiology, Department of Pediatrics; British Columbia Children's Hospital; Vancouver British Columbia Canada
13. Division of Cardiology, Department of Pediatrics; University of Iowa Children's Hospital; Iowa City Iowa USA
14. Division of Cardiology, Department of Pediatrics; Steven and Alexandra Cohen Children's Medical Center of New York; New Hyde Park New York USA
15. Division of Cardiology, Department of Pediatrics, Childrens Hospital of Orange County; University of California-Irvine; Orange California USA
16. Division of Cardiology, Department of Pediatrics; Clinica y Maternidad Suizo Argentina; Buenos Aires Argentina
17. Division of Cardiology, Department of Pediatrics; Washington University School of Medicine/St. Louis Children's Hospital; St. Louis Missouri USA
18. Division of Cardiology, Department of Pediatrics; Medical University of South Carolina; Charleston South Carolina USA
19. Division of Cardiology, Department of Pediatrics; Nationwide Children's Hospital; Columbus Ohio USA
20. Division of Cardiology, Department of Pediatrics; Nebraska Medical Center; Omaha Nebraska USA
21. Division of Cardiology, Department of Pediatrics; Northwest Center for Congenital Heart Disease; Spokane Washington USA
22. Division of Cardiology, Department of Pediatrics; Children's Hospital; Boston Massachusetts USA