1. Albert Einstein College of Medicine, New York, NY
2. Division of Critical Care Medicine, Department of Anesthesia and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
3. Texas Tech University Health Sciences Center, El Paso, TX
4. Children's Hospital of the King's Daughters, Norfolk, VA
5. Division of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM
6. Division of Emergency Medicine, Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, OH
7. Division of Emergency Medicine, Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
8. Division of Emergency Medicine, Department of Pediatrics, The George Washington School of Medicine and Health Sciences, Washington, DC.