1. Department of Emergency Medicine University of Massachusetts Worcester Massachusetts USA
2. Department of Emergency Medicine Swedish Hospital Part of NorthShore Chicago Illinois USA
3. Department of Emergency Medicine University of Missouri School of Medicine Missouri Columbia USA
4. Department of Emergency Medicine Medical College of Wisconsin Milwaukee Wisconsin USA
5. Department of Emergency Medicine The University of Kansas Health System Kansas City Missouri USA
6. Department of Emergency Medicine School of Medicine, Virginia Commonwealth University and University of Cincinnati Virginia Richmond USA
7. Department of Emergency Medicine University of Wisconsin School of Medicine and Public Health Wisconsin Madison USA