1. Department of Medicine, Division of Cardiology, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colorado
2. Department of Medicine, Division of Cardiology, University of Colorado School of Medicine, Aurora
3. Department of Medicine, Division of Cardiology, Veterans Affairs Boston Healthcare System, Boston, Massachusetts
4. Brigham and Women’s Hospital Heart & Vascular Center, Harvard Medical School, Boston, Massachusetts
5. Department of Medicine, Division of Cardiology, Durham Veterans Affairs Medical Center, Durham, North Carolina
6. National Heart and Lung Institute, Imperial College of Science, Technology and Medicine, London, United Kingdom
7. Thoraxcenter, Erasmus MC, Rotterdam, the Netherlands
8. Department of Surgery, University Hospitals of Cleveland Medical Center, Cleveland, Ohio
9. Clinical Trials Center, Cardiovascular Research Foundation, New York, New York
10. Center for Interventional Vascular Therapy, New York Presbyterian Hospital, Columbia University Medical Center, New York