1. Cardiovascular Institute of RI; Alpert Medical School of Brown University; Providence Rhode Island
2. Ochsner Medical Center; New Orleans Los Angeles
3. Columbia University Medical Center; New York New York
4. Massachusetts General Hospital; Boston Massachusetts
5. Lehigh Valley Hospital; Allentown Penninsylvania
6. Beaumont Health; Royal Oak Michigan
7. Brigham and Women's Hospital; Boston Massachusetts
8. Cleveland Clinic; Cleveland Ohio