1. Division of Pediatric Cardiology; Lucile Packard Children’s Hospital, Stanford University School of Medicine; Palo Alto California
2. Department of Pediatrics, Division of Pediatric Cardiology; Emory University School of Medicine; Atlanta Georgia
3. Children’s Healthcare of Atlanta; Sibley Heart Center Cardiology; Atlanta Georgia
4. Division of Pediatric Cardiology, Children’s Hospital of Philadelphia, Perelman School of Medicine; University of Pennsylvania; Philadelphia Pennsylvania
5. Division of Pediatric Cardiology; Texas Children’s Hospital, Baylor College of Medicine; Houston Texas
6. Division of Cardiology, Cincinnati Children's Hospital Medical Center; University of Cincinnati College of Medicine; Cincinnati Ohio