Jeffrey B Velotta1, Charles R Vasquez2, David J Sugarbaker3. 1. Division of Thoracic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass. Electronic address: jvelotta@partners.org. 2. David Geffen School of Medicine at UCLA, Los Angeles, Calif. 3. Division of Thoracic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass.