1 Department of Emergency Medicine, UCLA-Olive View Medical Center, Sylmar, CA; Department of Emergency Medicine, University of California, Los Angeles, Los Angeles, CA. Electronic address: slai@mednet.ucla.edu.
2 Department of Emergency Medicine, Aria-Jefferson Health, Philadelphia, PA.
3 Department of Emergency Medicine, University of California, San Francisco-Fresno, Fresno, CA.
4 Department of Emergency Medicine, UCLA-Olive View Medical Center, Sylmar, CA.