1. Department of Emergency Medicine David Geffen School of Medicine at UCLA Los Angeles California USA
2. Drexel University College of Medicine Philadelphia Pennsylvania USA
3. Department of Emergency Medicine University of Washington Seattle Washington USA
4. Department of Emergency Medicine Rush University Medical Center Chicago Illinois USA
5. Department of Emergency Medicine University of Michigan Ann Arbor Michigan USA
6. Department of Emergency Medicine University of Pittsburgh Pittsburgh Pennsylvania USA
7. Department of Emergency Medicine Weill Cornell Medicine New York New York USA
8. Department of Emergency Medicine UC Davis Sacramento California USA