1. The Cardiac Center, The Children’s Hospital of Philadelphia, Perelman School of Medicine, The University of Pennsylvania, Philadelphia
2. Children’s Hospital of Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles
3. Department of Emergency Medicine, Emory University, Atlanta, Georgia
4. Healthcare Analytics Unit, Center for Pediatric Clinical Effectiveness and PolicyLab, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
5. Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia
6. Sky Ridge Medical Center, Lone Tree, Colorado
7. Division of Emergency Medicine, University of Texas Health Science Center, Houston
8. The Cardiac Center, The Children’s Hospital of Philadelphia, Perelman School of Medicine, The University of Pennsylvania, Philadelphia8Leonard Davis Institute, University of Pennsylvania, Philadelphia