Affiliation: | 1. Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Illinois;2. Surgical Outcomes and Quality Improvement Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois;3. Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois;4. Division of Thoracic Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois |