1. Brigham and Women’s Hospital Heart and Vascular Center and Harvard Medical School, Boston, MA (M.R.M.).
2. St. Vincent Heart Center, Indianapolis, IN (C.S.).
3. University of Colorado School of Medicine, Aurora (J.C.C.).
4. Icahn School of Medicine at Mount Sinai, New York, NY (S.P.).
5. Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, NY (M.Y.).
6. Duke Heart Center, Duke University, Durham, NC (C.A.M.).
7. Washington University School of Medicine, St. Louis, MO (A.I.).
8. Montefiore Einstein Center for Heart and Vascular Care, New York, NY (D.J.G.).
9. University of Chicago School of Medicine and Medical Center, IL (N.U.).
10. Carolinas Medical Center, Charlotte, NC (S.G.).
11. University of Michigan Health System, Ann Arbor (F.D.P.).
12. University of Minnesota Medical Center, Minneapolis (R.J.).
13. Sharp Memorial Hospital, San Diego, CA (R.A.).
14. Bon Secours St. Mary’s Hospital, Richmond, VA (R.B.).
15. Aurora St. Luke’s Medical Center, Milwaukee, WI (V.T.).
16. Abbott, Abbott Park, IL (J.C., P.S., S.G.).
17. Florida Hospital, Orlando (S.C.S.).