1. The Memory Impairment and Neurodegenerative Dementia (MIND) Center, University of Mississippi Medical Center, Jackson, MS 39216, USA
2. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
3. Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA
4. Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
5. Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
6. Department of Neurology, University of North Carolina Chapel Hill, Chapel Hill, NC 27599, USA
7. Stroke Branch, National Institute of Neurological Disorders and Stroke Intramural Research Program, Bethesda, MD 20892, USA
8. Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA