1. Department of Emergency Medicine, Yale University School of Medicine, 464 Congress Avenue, Suite 260, New Haven, CT 06519, USA
2. Yale University, New Haven, CT 06520, USA
3. Department of Family Medicine, White Memorial Medical Center, Los Angeles, CA 90033, USA
4. Division of Pediatric Emergency Medicine, Elmhurst Hospital Center, Ichahn School of Medicine at Mount Sinai School, Elmhurst, NY 11373, USA