1. Department of Epidemiology, University of Alabama, Birmingham, Birmingham, AL, USA
2. Division of Neuropsychology, Department of Neurology, University of Alabama, Birmingham, Birmingham, AL, USA
3. Department of Biostatistics, University of Alabama, Birmingham, Birmingham, AL, USA
4. University of Southern California Keck School of Medicine, Los Angeles, CA, USA
5. Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, University of Alabama, Birmingham, Birmingham, AL, USA