1. Department of Emergency Medicine Ronald Reagan–UCLA Medical Center Los Angeles California USA
2. Department of Emergency Medicine David Geffen School of Medicine at UCLA Los Angeles California USA
3. Section of Emergency Medicine University of Chicago Chicago Illinois USA
4. Department of Emergency Medicine LAC+USC Medical Center Los Angeles California USA
5. Keck School of Medicine of USC Los Angeles California USA
6. Department of Emergency Medicine Harbor–UCLA Medical Center Torrance California USA
7. Department of Emergency Medicine Stanford School of Medicine Palo Alto California USA