1. Section of Cardiac Surgery, Heart & Vascular Center Dartmouth‐Hitchcock Medical Center Lebanon New Hampshire
2. Department of Cardiovascular Surgery, Marcus Valve Center Piedmont Heart Institute Atlanta Georgia
3. Division of Cardiothoracic Surgery University of Colorado Anschutz Medical Center Aurora Colorado
4. Division of Cardiac Surgery Northwestern Memorial Hospital Chicago Illinois
5. Department of Cardiac Surgery University of Michigan Ann Arbor Michigan
6. Divison of Cardiothoracic Surgery Washington University Medical Center St. Louis Missouri
7. Department of Anesthesia Mayo Clinic Rochester Minnesota
8. Department of Cardiovascular Surgery Mayo Clinic Rochester Minnesota
9. Department of Cardiothoracic Surgery Emory University Medical Center Atlanta Georgia
10. Department of Cardiothoracic Surgery University of Pittsburgh Medical Center Pittsburgh Pennsylvania
11. Department of Cardiothoracic Surgery Einstein Healthcare Network Philadelphia Pennsylvania
12. Department of Cardiothoracic Surgery Medical Center of Aurora Aurora Colorado
13. Department of Cardiac Surgery University of the Republic of Uruguay Montevideo Uruguay
14. Division of Cardiothoracic Surgery, Pauley Heart Center Virginia Commonwealth University Richmond Virginia
15. Department of Cardiothoracic Surgery Ascension Medical Group Indianapolis Indiana
16. Department of Thoracic and Cardiovascular Surgery Cleveland Clinic Cleveland Ohio