1. aDepartment of Emergency Medicine & Pediatrics, University of Vermont Medical Center and Children’s Hospital, Larner College of Medicine at the University of Vermont, Burlington, Vermont
2. bDepartment of Pediatrics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois
3. cDepartment of Pediatrics and Emergency Medicine, Children’s Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia
4. dSection of Pediatric Surgery, CS Mott Children’s Hospital, University of Michigan Ann Arbor, Ann Arbor, Michigan
5. eDepartment of Pediatrics, Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
6. fDepartments of Pediatrics and Emergency Medicine, Harvard Medical School; Division of Emergency Medicine, Boston Children’s Hospital, Boston, Massachusetts
7. gDepartment of Pediatrics, Children’s National Hospital, George Washington University, Washington
8. hChildren’s Hospital Association, Lenexa, Kansas
9. iDepartment of Pediatrics, Section of Hospital Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
10. jUCLA-Semel Institute for Neuroscience and Human Behavior, University of California at Los Angeles, Los Angeles, California
11. kDepartment of Emergency Medicine, Comprehensive Injury Center, Medical College of Wisconsin, Milwaukee, Wisconsin