CONTRIBUTING AUTHORS Mary Kate F Abbadessa, MSN, RN, ACCNS-P, RN-BC, CPEN Clinical Nurse Specialist Emergency Medicine Children’s Hospital of Philadelphia/Perelman School of Medicine at the University of Pennsylvania Philadelphia, Pennsylvania Alyssa Abo, MD, FAAP, FACEP, FAIUM Director of Strategic Innovation | Emergency Medicine Chair, Hospital Oversight Committee for Point-of-Care Ultrasound Children’s National Hospital Associate Professor of Pediatrics and Emergency Medicine George Washington University School of Medicine and Health Sciences Washington, DC Dewesh Agrawal, MD Professor of Pediatrics and Emergency Medicine Vice-Chair for Medical Education and Designated Institutional Official Children’s National Hospital/George Washington University School of Medicine and Health Sciences Washington, DC Michael S.D Agus, MD Division Chief/Associate Professor of Pediatrics Division of Medical Critical Care Boston Children’s Hospital/Harvard Medical School Boston, Massachusetts Aletha Y Akers, MD, MPH Associate Professor of Pediatrics Department of Pediatrics