1. Department of Emergency Medicine Brigham& Women's Hospital Boston MA
2. Department of Emergency Medicine Beaumont Health System Royal Oak MI
3. Department of Emergency Medicine Tampa General Hospital Tampa FL
4. Department of Emergency Medicine University of Ottawa Ottawa Hospital Research Institute Ottawa OntarioCanada
5. Department of Cardiology Presence Medical Group and University of Illinois Urbana IL
6. Anticoagulation Clinic Mission Hospitals Asheville NC
7. Department of Emergency Medicine CarolinaEast Medical Center New Bern NC
8. Department of Emergency Medicine Thomas Jefferson University Philadelphia PA
9. Department of Emergency Medicine Indiana University Health IndianapolisIN
10. Department of Cardiology Baptist Health Lexington Lexington KY
11. Department of Emergency Medicine Covenant Medical Center Lubbock TX
12. Department of Emergency Medicine Sturdy Memorial Hospital Attleboro MA
13. Department of Emergency Medicine UCSF Fresno Fresno CA
14. Department of Emergency Medicine George Washington University School of Medicine and Health Sciences Washington DC