1. John Cochran VA Medical Center; St. Louis VA Healthcare System and St. Louis School of Medicine; St. Louis Missouri
2. Beth Israel Deaconess Medical Center; Harvard Medical School; Boston Massachusetts
3. University of South Carolina School of Medicine/Greenville; Greenville South Carolina
4. Massachusetts General Hospital; Harvard Medical School; Boston Massachusetts
5. John Ochsner Heart & Vascular Institute; Ochsner Medical Center; New Orleans Los Angeles