1. Department of Epidemiology School of Public Health University of Alabama at Birmingham Birmingham Alabama USA
2. Division of Neuropsychology Department of Neurology University of Alabama at Birmingham Birmingham Alabama USA
3. Alabama College of Osteopathic Medicine Dothan Alabama USA
4. Division of Gerontology, Geriatrics, and Palliative Care Department of Medicine University of Alabama at Birmingham Birmingham Alabama USA
5. O'Neal Comprehensive Cancer Center University of Alabama at Birmingham Birmingham Alabama USA