1. Montefiore Einstein Center for Heart and Vascular Care, New York, New York
2. Columbia University College of Physicians and Surgeons, New York–Presbyterian Hospital, New York
3. INTEGRIS Baptist Medical Center, Oklahoma City, Oklahoma
4. St Vincent Heart Center, Indianapolis, Indiana
5. Duke University Medical Center, Durham, North Carolina
6. Baptist Health Medical Center, Little Rock, Arkansas
7. Washington University School of Medicine, St Louis, Missouri
8. University of Colorado School of Medicine, Aurora
9. Advent Health Transplant Institute, Orlando, Florida
10. University of Minnesota, Minneapolis
11. Houston Methodist Hospital, Houston, Texas
12. University of Nebraska Medical Center, Omaha
13. Pritzker School of Medicine, University of Chicago, Chicago, Illinois
14. University of Chicago Medical Center, Chicago, Illinois
15. Yale Medical School, New Haven, Connecticut
16. MedStar Washington Hospital Center, Washington, DC
17. Abbott Laboratories, Abbott Park, Illinois
18. Heart and Vascular Center, Center for Advanced Heart Disease, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts