1. Department of Psychiatry and Behavioral Sciences; University of Washington; Seattle Washington
2. Geriatric Research Education and Clinical Center; Seattle Veterans Affairs Medical Center; Seattle Washington
3. Oregon Center for Aging and Technology; Oregon Health & Science University; Portland Oregon
4. Department of Neurology; Oregon Health & Science University; Portland Oregon
5. Department of Biomedical Engineering; Oregon Health & Science University; Portland Oregon
6. Public Health and Preventive Medicine; Oregon Health & Science University; Portland Oregon
7. Health Services Research and Development; Portland Veteran Affairs Medical Center; Portland Oregon
8. Neurology Service; Portland Veteran Affairs Medical Center; Portland Oregon