1. Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
2. Division of Emergency Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
3. Now with the Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
4. Division of Emergency Medicine, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
5. Emergency Medicine, Division of Pharmacy, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
6. Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio