National Child Protection Project (DM
GF, HM, MT, MT, AC), Center for Pediatric Emergency Medicine, Division of Pediatric Emergency Medicine, Department of Pediatrics and Department of Emergency Medicine/Surgery, NYU School of Medicine/Bellevue Hospital, New York, New York; Division of Pediatric Critical Care and Child Protection (DM), Department of Pediatrics, Columbia College of Physicians and Surgeons/Harlem Hospital Center, New York, New York; Division of Pediatric Surgery (AC), Department of Surgery, Columbia College of Physicians and Surgeons/Harlem Hospital Center, New York, New York; National Emergency Medical Services for Children Data Analysis Resource Center (LO), Intermountain Injury Control Research Center, Salt Lake City, Utah; and Department of Pediatrics (LO), University of Utah, Salt Lake City, Utah