1. Division of Emergency Medicine, Department of Pediatrics, Children’s Hospital of Michigan, Detroit Medical Center, Detroit, Michigan;
2. Children’s Research Center of Michigan and Wayne State University, Detroit, Michigan;
3. Department of Emergency Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico; and
4. Divisions of General Pediatrics and Hospital Medicine, Department of Pediatrics, School of Medicine, University of Washington and Seattle Children’s Hospital, Seattle, Washington