1. Cedars‐Sinai Smidt Heart Institute Los AngelesCalifornia
2. Weill Cornell Medicine New York New York
3. Northwestern University Chicago Illinois
4. University of California at San Francisco San FranciscoCalifornia
5. University of Texas Southwestern Medical Center Dallas Texas
6. Advocate Christ Medical Center Oak Lawn Illinois
7. Cleveland Clinic Cleveland Ohio
8. University of Arkansas Little Rock Arkansas
9. University of Pittsburgh Pittsburgh Pennsylvania
10. Baylor University Dallas Texas
11. Drexel University Philadelphia Pennsylvania
12. Mayo Clinic Rochester Minnesota
13. St. Louis University Saint Louis Missouri
14. Emory University AtlantaGeorgia
15. Johns Hopkins University Baltimore Maryland
16. Henry Ford Hospital Detroit Michigan
17. Mount Sinai Hospital New York New York
18. University of California Los AngelesCalifornia
19. Inova Heart and Vascular Institute Falls Church Virginia
20. University of Toronto Toronto OntarioCanada
21. University of Michigan Ann Arbor Michigan
22. University of Alberta Edmonton AlbertaCanada
23. Division of Transplant Surgery Brigham and Women's Hospital Harvard Medical School Boston Massachusetts
24. University of Colorado Denver Colorado