1. Division of Pediatric Cardiology, Baystate Medical Center, Springfield, MA
2. Department of Pediatrics, Tufts Medical School, Boston, MA
3. Pediatric Cardiology, Connecticut Children's Medical Center, Hartford, CT
4. Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT
5. Pediatric Cardiology, Children's Hospital at Dartmouth‐Hitchcock, Dover, NH
6. Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH
7. Pediatric Cardiology, Hasbro Children's Hospital, Providence, RI
8. Department of Pediatrics, Warren Alpert Medical School at Brown University, Providence, RI
9. Pediatric Cardiology, Harvard Vanguard Medical Associates, Boston, MA
10. Institute for Relevant Clinical Data Analytics, Inc, Boston, MA
11. Pediatric Cardiology, Children's Hospital of Wisconsin, Milwaukee, WI
12. Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI
13. Department of Cardiology, Boston Children's Hospital, Boston, MA
14. Department of Pediatrics, Harvard Medical School, Boston, MA
15. Arrhythmia Service, Boston Children's Hospital, Boston, MA