1. Reynolds Oklahoma Center on Aging; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
2. Department of Geriatric Medicine; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
3. Department of Oklahoma Center for Neuroscience; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
4. Department of Physiology; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
5. Oklahoma City VA Medical Center; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma