1 UCSF-Fresno Medical Education Program, University of California, San Francisco-Fresno, Fresno, CA. Electronic address: bchinnock@fresno.ucsf.edu.
2 Eastern Virginia Medical School and the Division of Emergency Medicine, Children's Hospital of the King's Daughters, Norfolk, VA.
3 Department of Emergency Medicine, The Icahn School of Medicine at Mount Sinai, New York, NY.
4 Department of Emergency Medicine, University of Calgary, Calgary, Alberta, Canada.
5 Department of Emergency Medicine, Children's Health System, United Medical Center, Washington, DC.
6 Department of Pediatrics, Columbia University College of Physicians and Surgeons, New York, NY.
7 Department of Emergency Medicine, David Geffen School of Medicine at UCLA, and the Department of Emergency Medicine, Los Angeles County + University of Southern California Medical Center, Los Angeles, CA.
8 UCSF-Fresno Medical Education Program, University of California, San Francisco-Fresno, Fresno, CA; Department of Emergency Medicine, University of California, San Francisco-Fresno, Fresno, CA.