1. Center for Injury Research and Prevention; The Children's Hospital of Philadelphia; Philadelphia PA USA
2. Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
3. Department of Pediatrics; Kentucky Children's Hospital; Lexington KY USA
4. College of Medicine; University of Kentucky; Lexington KY USA
5. Department of Psychology; Texas Tech University; Lubbock TX USA
6. NeuroDevelopmental Science Center; Akron Children's Hospital; Akron OH USA