Affiliation: | a Department of Cardiothoracic Surgery, The Albert Einstein College of Medicine, New York, New York b Thoracic Surgery Directors Association, Arlington, Virginia c Division of Cardiothoracic Surgery, University of Colorado HSC, Denver, Colorado d Division of Thoracic Surgery, Massachusetts General Hospital, Boston, Massachusetts e Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan f Division of Cardiothoracic Surgery, University of Washington, Seattle, Washington |