1. Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania2Department of Psychiatry, University of Pennsylvania, Philadelphia
2. Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania3Department of Pediatrics, University of Pennsylvania, Philadelphia4Center for Pediatric Traumatic Stress, The Children’s Hospital of Philadelphi
3. Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania6Department of Psychology, Drexel University, Philadelphia, Pennsylvania
4. Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania3Department of Pediatrics, University of Pennsylvania, Philadelphia
5. Center for Injury Research and Prevention, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania3Department of Pediatrics, University of Pennsylvania, Philadelphia5Division of Emergency Medicine, Department of Pediatrics, University of Penns