1. Brigham and Women’s Hospital, Boston, Massachusetts
2. Montefiore Einstein Center for Heart and Vascular Care, New York, New York
3. University of Colorado School of Medicine, Aurora
4. Henry Ford Hospitals, Detroit, Michigan
5. Baylor University Hospital, Dallas, Texas
6. University of Chicago, Chicago, Illinois
7. Columbia University College of Physicians and Surgeons and NewYork-Presbyterian Hospital, New York, New York
8. Weill Cornell Medical College, New York, New York
9. INTEGRIS Baptist Medical Center, Oklahoma City, Oklahoma
10. Abbott, Abbott Park, Illinois