Affiliation: | 1. Cardiothoracic Surgery, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina;2. Vanderbilt-Ingram Cancer Center, Department of Thoracic Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee;3. Division of Cardiothoracic Surgery, Stanford University Medical Center, Stanford, California;4. Department of Cardiac Surgery, University of Rochester Medical Center, Rochester, New York |