1. Department of Cardiovascular and Thoracic Surgery, West Virginia University, Morgantown
2. Division of Cardiology, Duke University, Durham, North Carolina
3. Duke Clinical Research Institute, Durham, North Carolina
4. Cardiovascular Service Line, Baylor Scott & White Health System, Dallas, Texas
5. Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, Ohio
6. Department of Cardiac Surgery, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
7. Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota
8. Society of Thoracic Surgeons, Chicago, Illinois
9. Division of Cardiac Surgery, Northwestern University, Chicago, Illinois
10. Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston
11. Center for Outcomes Research, Columbia University, New York, New York
12. Division of Cardiothoracic Surgery, Houston Methodist DeBakey Heart & Vascular Center, Houston, Texas
13. Department of Cardiac Surgery, Marcus Heart and Vascular Center, Piedmont Heart and Vascular Institute, Atlanta, Georgia
14. Division of Cardiac Surgery, St Vincent Hospital, Worcester, Massachusetts
15. Division of Cardiac Surgery, University of Maryland, Baltimore