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1 Department of Pediatrics and Emergency Medicine, The George Washington University School of Medicine, and Children's National Medical Center, Washington, District of Columbia.
2 Department of Pediatrics, Virginia Tech Carilion School of Medicine, Roanoke, Virginia.
3 Department of Pediatrics, University of Texas at Austin Dell Medical School, Dell Children's Medical Center of Central Texas, Pediatric Emergency Medicine, Austin, Texas.
1 Department of Pediatrics and Emergency Medicine, The George Washington University School of Medicine, and Children's National Medical Center, Washington, District of Columbia.
2 Department of Pediatrics, Virginia Tech Carilion School of Medicine, Roanoke, Virginia.
3 Department of Pediatrics, University of Texas at Austin Dell Medical School, Dell Children's Medical Center of Central Texas, Pediatric Emergency Medicine, Austin, Texas.