1. Division of Cardiothoracic Surgery, Department of Surgery, Columbia University Medical Center , New York, NY, USA
2. Department of Surgery, Center for Innovation and Outcomes Research, Columbia University Medical Center , New York, NY, USA
3. Division of Cardiology, Department of Medicine, Columbia University Medical Center , New York, NY, USA
4. Division of Cardiothoracic Surgery, Department of Surgery, Weill Cornell Medical Center , New York, NY, USA