1 The Society of Thoracic Surgeons, Chicago, Illinois.
2 Department of Cardiovascular Surgery, Houston Methodist Hospital, Houston, Texas.
3 Division of Cardiothoracic Surgery, Department of Surgery, Westchester Medical Center, New York Medical College, Valhalla, New York.
4 Division of Thoracic and Esophageal Surgery, Department of Surgery, University Hospitals Cleveland Medical Center and Case Western Reserve School of Medicine, Cleveland, Ohio.