1. Medical College of Wisconsin, Wisconsin
2. University of Utah, Utah
3. University of Colorado, Children’s Hospital Colorado, Colorado
4. University of Cincinnati, Cincinnati Children’s Hospital, Ohio
5. University of Pennsylvania, Children’s Hospital of Philadelphia, Pennsylvania
6. Children’s National Medical Center, The George Washington University, Washington, DC
7. Biostatistician, University of Utah, Utah
8. Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children’s Hospital of Chicago for The Pediatric Emergency Care Applied Research Network (PECARN), Chicago, Illinois, USA