1. Division of General Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania2Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. Pediatric Emergency Medicine Leicester Academic Group, Leicester Royal Infirmary, Leicester, United Kingdom4Department of Health Sciences, Social Science Applied to Healthcare Improvement Research Group, University of Leicester, Leicester, United Kingdom
3. Division of Hospital Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio6Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio