1. Sanders-Brown Center on Aging, Alzheimer's Disease Center; University of Kentucky; Lexington Kentucky
2. Department of Epidemiology, College of Public Health; University of Kentucky; Lexington Kentucky
3. Department of Neurology, College of Medicine; University of Kentucky; Lexington Kentucky
4. Department of Physiology and Pharmacology and Blanchette Rockefeller Neurosciences Institute; West Virginia University; Morgantown West Virginia