1. New York Medical College, Valhalla, NY, USA
2. Department of Cardiology, Westchester Medical Center, New York Medical College, Valhalla, NY, USA
3. Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, USA
4. Beth Israel Deaconess Medical Center, Cardiac Surgery, Boston, MA, USA
5. Division of Cardiothoracic Surgery, Department of Surgery, Westchester Medical Center, Valhalla, NY, USA