1. Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama
2. Department of Medicine, Division of Hematology-Oncology, University of Alabama at Birmingham, Birmingham, Alabama
3. Center for Outcomes Research, John Peter Smith Hospital Health Network, Fort Worth, Texas
4. Department of Neurology, Division of Neuro-Oncology, University of Alabama at Birmingham, Birmingham, Alabama
5. Department of Medicine, Division of Palliative Medicine, University of Alabama at Birmingham, Birmingham, Alabama
6. Birmingham VA Medical Center, Birmingham Alabama