1. Department of Emergency Medicine; Nationwide Children's Hospital and The Ohio State University College of Medicine; Columbus OH
2. Departments of Pediatrics and Emergency Medicine; Children's Hospital of Pittsburgh and University of Pittsburgh School of Medicine; Pittsburgh PA
3. Department of Emergency Medicine and Pediatrics; Children's Hospital of Michigan and Wayne State University School of Medicine; Detroit MI
4. Department of Emergency Medicine; C. S. Mott Children's Hospital and University of Michigan School of Medicine; Ann Arbor MI
5. Nationwide Children's Hospital; Columbus OH
6. Department of Emergency Medicine; The Ohio State University College of Medicine; Columbus OH