1. Section of Thoracic Surgery, Department of Surgery, Yale School of Medicine, New Haven, Connecticut
2. American College of Surgeons Cancer Programs, National Cancer Database, Chicago, Illinois
3. Cancer Outcomes Public Policy and Effectiveness Research Center, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
4. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
5. Department of Thoracic Surgery, Geisinger Heart Institute, Danville, Pennsylvania
6. American College of Surgeons Cancer Programs, Chicago, Illinois
7. Abramson Cancer Center, University of Pennsylvania, Philadelphia