1. Division of Vascular Surgery, Department of Surgery, Columbia University Medical Center, New York, New York
2. New York University School of Medicine, New York
3. Division of Vascular Surgery, University of California-Los Angeles, Los Angeles
4. Cardiovascular Surgery Department, IRCCS Policlinico San Donato University of Milan, Milan, Italy
5. Division of Cardiology, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor