1. Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia, USA.
2. School of Nursing, Johns Hopkins University, Baltimore, Maryland, USA.
3. Department of Neurology, University of Utah, Salt Lake City, Utah, USA.
4. George E. Wahlen VA, Salt Lake City Health Healthcare System, Salt Lake City, Utah, USA.
5. Molecular Imaging Research Hub, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.
6. U.S. Special Operations Command, Tampa, Florida, USA.
7. Departments of Psychiatry and Behavioral Neurosciences, and Psychology, University of South Florida, Tampa, Florida, USA.
8. Cognitive Research Corporation, St. Petersburg, Florida, USA.
9. Naval Medical Research Command, Silver Spring, Maryland, USA.
10. Operational and Undersea Medicine Directorate, Naval Medical Research Command, Silver Spring, Maryland, USA.