1 Department of Emergency Medicine, Stanford University, Stanford, CA. Electronic address: njoshi8@stanford.edu.
2 Department of Pharmacy, Massachusetts General Hospital, and the Department of Emergency Medicine, Harvard Medical School, Boston, MA.
3 Department of Emergency Medicine, University of California, San Francisco-Fresno, Fresno, CA.
4 Department of Emergency Medicine, David Geffen School of Medicine at UCLA, and Department of Emergency Medicine, Los Angeles County+USC Medical Center, Los Angeles, CA.