1. Rush Medical College; Chicago Illinois
2. Geisinger Clinic; Wilkes-Barre Pennsylvania
3. Lahey Hospital and Medical Center; Burlington Massachusetts
4. Tufts University School of Medicine; Boston Massachusetts
5. Christiana Care Health System; Newark Delaware
6. University of Texas Health Science Center Houston, McGovern Medical School; Houston Texas
7. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center; Boston Massachusetts
8. New York Presbyterian Hospital; Weill Cornell Medical College; New York New York
9. Seton Heart Institute; Austin Texas
10. Massachusetts General Hospital; Harvard Medical School; Boston Massachusetts
11. First Health; Pinehurst North Carolina