1. Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, Minnesota
2. Baylor University, Waco, Texas
3. Hennepin Healthcare, Department of Emergent Medicine, Minneapolis, Minnesota
4. Carolinas Medical Center, Department of Emergency Medicine, Charlotte, North Carolina
5. Hennepin EMS, Hennepin Healthcare, Minneapolis, Minnesota
6. Division of Cardiology, Stony Brook University, Stony Brook, New York
7. Department of Cardiology, Hennepin Healthcare, Minneapolis, Minnesota