1. Section of Surgical Sciences, Department of General Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
2. Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, Nashville, TN, USA
3. Vanderbilt University School of Medicine, Nashville, TN, USA
4. Division of Trauma and Surgical Critical Care, Vanderbilt University Medical Center, Nashville, TN, USA
5. Surgical Services, Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
6. Department of Psychiatry and Behavior Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
7. Department of Health Policy, Vanderbilt University Medical Center, Nashville, TN, USA