1. Piedmont Heart Institute; Atlanta GA
2. Newton-Wellesley Hospital; Newton MA
3. Greenville Health System; Greenville SC
4. The Warren Alpert Medical School of Brown University; Providence RI
5. Swedish Heart and Vascular; Seattle WA
6. Metro Health-University of Michigan Health; Grand Rapids MI
7. Loyola University Medical Center/Hines VA; Maywood IL
8. Massachusetts General Hospital; Boston MA
9. Weill Cornell Medical College; New York NY
10. Seton Heart Institute; Austin TX
11. University of Kansas Medical Center; Kansas City KS
12. Columbia University Medical Center/NY Presbyterian Hospital; New York NY
13. Beth Israel Deaconess Medical Center; Boston MA
14. Cleveland Clinic; Cleveland OH
15. Ochsner Medical Center; New Orleans LA