Boyd Rhea W, Ellison Angela M, Horn Ivor B
Department of Pediatrics, Stanford University, Palo Alto Medical Foundation, Pediatric Urgent Care, Palo Alto, California;
Division of Emergency Medicine, The Children's Hospital of Philadelphia, Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania; and.
Pediatrics. 2016 Mar;137(3):e20152711. doi: 10.1542/peds.2015-2711. Epub 2016 Feb 1.