Jaime Jordan1,2, Samuel O Clarke3, Wendy C Coates1,4. 1. Department of Emergency Medicine University of California, Los Angeles, David Geffen School of Medicine at UCLA Los Angeles California USA. 2. Department of Emergency Medicine Ronald Reagan UCLA Medical Center Los Angeles California USA. 3. Department of Emergency Medicine University of California, Davis Health System Sacramento California USA. 4. Department of Emergency Medicine Harbor-UCLA Medical Center Torrance California USA.