1. Departments of Pediatrics and Emergency Medicine; Rhode Island Hospital; Providence RI USA
2. Warren Alpert Medical School; Brown University; Providence RI USA
3. Department of Pediatrics; Sidney Kimmel Medical College at Thomas Jefferson University; Wilmington DE USA
4. Department of Pediatrics; Washington University School of Medicine; St. Louis MO USA
5. Department of Pediatrics; University of Colorado, School of Medicine; Denver CO USA
6. Department of Pediatrics; University of Utah, School of Medicine; Salt Lake City UT USA
7. Department of Emergency Medicine; University of California Davis; Davis CA USA
8. Department of Pediatrics; University of California Davis; Davis CA USA