1. Division of Cardiology, University of Colorado and Rocky Mountain Regional VA Medical Center, Denver, CO, USA
2. Advanced Cardiac and Vascular Centers, Grand Rapids, MI, USA
3. Division of Vascular Surgery, New Mexico Heart Institute, Albuquerque, NM, USA
4. The Cardiac and Vascular Institute, Gainesville, FL, USA
5. Division of Vascular Surgery, University of California, Los Angeles, CA, USA
6. Division of Vascular Surgery, Baylor Medical Center, Houston, TX, USA
7. Division of Cardiology, Yale University, New Haven, CT, USA
8. Mission Hospital, Orange County, CA, USA
9. Interventional Radiology Unit, Casa Di Cura Abano Terme, Italy
10. Deborah Heart and Lung Center, Browns Mills, NJ, USA
11. Division of Vascular Surgery, Stanford University, Stanford, CA, USA
12. Novant Health Heart & Vascular Institute, Charlotte, NC, USA
13. Cardiovascular Institute of the South, Houma, LA, USA