1. Nutritional Sciences Department, Texas Tech University, Lubbock, TX 79409-1270, USA
2. Internal Medicine Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
3. Garrison Institute on Aging, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
4. Pharmacology & Neuroscience Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
5. Neurology Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
6. Speech, Language and Hearing Sciences Departments, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA
7. Public Health Department, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA