1. Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Hamilton, Montana, USA
2. Department of Pathology, University of California, San Diego, La Jolla, California, USA
3. Department of Neurology, Multiple Sclerosis Center, University of California, San Francisco (UCSF), San Francisco, California, USA
4. Cognitive and Behavioral Research Unit, National Institute of Neurology, Havana, Cuba
5. Department of Neurology, Memory and Aging Center, University of California, San Francisco (UCSF), San Francisco, California, USA
6. Department of Pathology, University of California, San Francisco (UCSF), San Francisco, California, USA
7. Department of Family Medicine & Public Health, University of California, San Diego, La Jolla, California, USA
8. Department of Neurosciences, University of California, San Diego, La Jolla, California, USA
9. Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
10. Department of Neurology, Case Western Reserve University, Cleveland, Ohio, USA
11. Department of Pathology, Immunology, and Microbiology, University of California, Davis, Davis, California, USA