1. Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville2Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
2. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
3. Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
4. School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
5. Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee6Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
6. Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville7Division of Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
7. Department of Medical Imaging, Tennessee Valley Healthcare System-Veterans Affairs, Nashville9Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, Tennessee
8. Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee10Division of Obstetrics and Gynecology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
9. Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee