1. VA North Texas Healthcare System and University of Texas Southwestern Medical Center; Dallas Texas
2. Columbia University; New York New York
3. Henry Ford Hospital; Detroit Michigan
4. Beth Israel Deaconess Medical Center; Boston Massachusetts
5. Massachusetts General Hospital and Harvard Medical School; Boston Massachusetts
6. Torrance Memorial Medical Center; Torrance California
7. PeaceHealth St. Joseph Medical Center; Bellingham Washington
8. Mid America Heart Institute; Kansas City Missouri
9. Piedmont Heart Institute; Atlanta Georgia
10. Minneapolis VA Healthcare System and University of Minnesota; Minneapolis Minnesota
11. Medical Center of the Rockies; Loveland Colorado
12. Banner Good Samaritan Cavanagh Heart Clinic; Phoenix Arizona
13. Methodist Hospital; Houston Texas
14. VA San Diego Healthcare System and University of California San Diego; San Diego California
15. Providence Health Center; Waco Texas
16. Boston Scientific; Natick Massachusetts