1. Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
2. Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
3. Schulich Heart Centre, Sunnybrook Health Science University of Toronto, Toronto, Ontario, Canada
4. Department of Surgery, Center for Innovation and Outcomes Research, Columbia University Medical Center, New York, New York
5. The Society of Thoracic Surgeons Research Center, Chicago, Illinois