1 Department of Pediatrics, Section of Emergency Medicine, Baylor College of Medicine, 6621 Fannin Street, Suite A2210, Houston, TX 77030, USA. Electronic address: corriec@bcm.edu.
2 Division of Emergency Medicine, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, BCH306, Boston, MA 02115, USA.
3 Department of Pediatrics, Section of Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, 6701 Fannin St., MW 1010.03, Houston, TX 77030, USA.