1. Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
2. Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
3. Center for Biomedical Ethics, Vanderbilt University Medical Center, Nashville, TN, USA
4. Department of Psychology, Vanderbilt University Medical Center, Nashville, TN, USA
5. Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, TN, USA
6. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA