1. Heart and Vascular Program, Baystate Medical Center, Springfield, Massachusetts
2. Montreal Heart Institute, Montreal, Canada
3. WakeMed Health and Hospitals, Raleigh, North Carolina
4. Centennial Heart & Vascular Center, Nashville, Tennessee
5. St Boniface Hospital, University of Manitoba, Winnipeg, Manitoba, Canada
6. Now with Department of Surgery, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
7. Cleveland Clinic, Cleveland, Ohio
8. MemorialCare Heart and Vascular Institute, Los Angeles, California
9. Franciscan Health Heart Center, Indianapolis, Indiana
10. Duke University School of Medicine, Durham, North Carolina
11. Atrium Health, Department of Cardiovascular and Thoracic Surgery, North Carolina
12. St Georges University of London, London, United Kingdom
13. Centre Hospitalier Universitaire Vaudois Cardiac Surgery Centre, Lausanne, Switzerland
14. University of Calgary, Calgary, Alberta, Canada
15. Department of Surgery, Baystate Medical Center, Springfield, Massachusetts
16. Department of Cardiac Surgery, St Charles Medical Center, Bend, Oregon