1. Department of Pediatrics Columbia University College of Physicians and Surgeons New York NY
2. Department of Pediatrics State University of New York at Buffalo Buffalo NY
3. Department of Pediatrics Alfred I. duPont Hospital for Children Wilmington DE
4. Department of Pediatrics Children's Mercy Hospital Kansas City MO
5. Department of Pediatrics Baylor College of Medicine Houston TX
6. Departments of Emergency Medicine and Pediatrics SUNY Upstate Medical University Syracuse NY
7. Gertrude Sergievsky Center New York NY
8. Departments of Emergency Medicine and Pediatrics University of California Davis Medical Center Sacramento CA