1. Department of Medicine, Division of General Medicine and Geriatrics, Emory School of Medicine, Atlanta, GA, USA
2. Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Decatur, GA, USA
3. Department of Rehabilitation Medicine, Emory School of Medicine, Atlanta, GA, USA
4. Emory University Rollins School of Public Health, Atlanta, GA, USA
5. Emory University College of Arts and Sciences, Atlanta, GA, USA
6. Department of Neurology, Atlanta, Emory University School of Medicine, GA, USA