1. Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
2. Department of Anesthesiology and Critical Care, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
3. Department of Neurology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
4. Division of Vascular and Endovascular Surgery, Department of Surgery, Cooper University Hospital, Camden, NJ, USA