Affiliation: | 1.Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, 2716 South Street, 13th Floor, Philadelphia, PA, 19146, USA ;2.Master of Public Health Program, Center for Public Health Initiatives, Perelman School of Medicine at the University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA, 19104, USA ;3.Division of Emergency Medicine, Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA ; |