1. Veterans Affairs Puget Sound Health Care System; Seattle Washington USA
2. Department of Neurology; University of Washington School of Medicine; Seattle Washington USA
3. Lou Ruvo Center for Brain Health, Neurological Institute, Cleveland Clinic; Cleveland Ohio USA
4. Department of Neurology; University of Pennsylvania; Philadelphia Pennsylvania USA
5. Department of Psychiatry; University of Pennsylvania; Philadelphia Pennsylvania USA
6. Philadelphia Veterans Affairs Medical Center; Philadelphia Pennsylvania USA
7. Department of Pathology and Laboratory Medicine; University of Pennsylvania; Philadelphia Pennsylvania USA
8. Institute on Aging; University of Pennsylvania; Philadelphia Pennsylvania USA
9. Department of Epidemiology, School of Public Health; University of California Los Angeles; Los Angeles California USA
10. Department of Environmental Health Sciences, School of Public Health; University of California Los Angeles; Los Angeles California USA
11. Department of Neurology; University of California Los Angeles; Los Angeles California USA
12. Department of Neurology; Emory University School of Medicine; Atlanta Georgia USA
13. Portland Veterans Affairs Medical Center; Portland Oregon USA
14. Department of Neurology; Oregon Health and Science University; Portland Oregon USA
15. Department of Neurological Sciences; Rush University Medical Center; Chicago Illinois USA
16. Department of Neurology and Rehabilitation Medicine; University of Cincinnati; Cincinnati Ohio USA
17. Cincinnati Veterans Affairs Medical Center; Cincinnati Ohio USA
18. Department of Neurology; Johns Hopkins University School of Medicine; Baltimore Maryland USA
19. Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering; Johns Hopkins University School of Medicine; Baltimore Maryland USA
20. Solomon H. Snyder Department of Neuroscience and Department of Pharmacology and Molecular Sciences; Johns Hopkins University School of Medicine; Baltimore Maryland USA
21. Department of Psychiatry and Behavioral Sciences; University of Washington School of Medicine; Seattle Washington USA
22. Department of Pathology; University of Washington School of Medicine; Seattle Washington USA
23. Department of Epidemiology, School of Medicine; University of California Irvine; Irvine California USA