1. VA Salt Lake City Health Care System, Salt Lake City, Utah, USA.
2. Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA.
3. Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
4. Department of Neurology, University of Utah School of Medicine, Salt Lake City, Utah, USA.
5. Department of Psychology, University of Texas San Antonio, San Antonio, Texas, USA.
6. Department of Population Health Sciences, University of Utah School of Medicine, Salt Lake City, Utah, USA.
7. Epilepsy Center of Excellence VA Connecticut Health Care System, West Haven, Connecticut, USA; Departments of Neurology and Psychiatry, Yale University School of Medicine, West Haven, Connecticut, USA.
8. Department of Neurology, Baylor School of Medicine, Houston, Texas, USA.
9. Hunter Holmes McGuire VA Medical Center, Richmond, Virginia, USA; Department of Neurology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA.
10. Department of Neurology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
11. VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA; Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
12. Miami VA Health Care System, Miami, Florida, USA; Department of Neurology, University of Miami School of Medicine, Miami, Florida, USA.
13. Polytrauma Rehabilitation Center, South Texas Veterans Healthcare System, San Antonio, Texas, USA.
14. VA Greater Los Angeles Healthcare System, Los Angeles, California, USA; University of California Los Angeles, Los Angeles, California, USA.
15. Desert Regional Medical Center, Palm Springs, California, USA.
16. VA Portland Healthcare System, Portland, Oregon, USA; Oregon Health & Sciences University, Portland, Oregon, USA.
17. Cramer Consulting, Houston, Texas, USA.
18. Behavioral Science Consulting, San Antonio, Texas, USA.