Authors
Steven G McKee
Department of Pediatrics, the Children's Hospital of Philadelphia, Philadelphia, PA; Hospital of the University of Pennsylvania, Philadelphia, PA
Ryan Close
Department of Pediatrics, the Children's Hospital of Philadelphia, Philadelphia, PA;
Hospital of the University of Pennsylvania, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
Elizabeth Lowenthal
Department of Pediatrics, the Children's Hospital of Philadelphia, Philadelphia, PA;
Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA; Department of Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
