1. Department of Neurology, University of Colorado Health Sciences Center, Denver, Colorado.
2. Departments of Neurology, Pediatrics, University of Colorado Health Sciences Center, Denver, Colorado.
3. Departments of Neurology, Immunology, University of Colorado Health Sciences Center, Denver, Colorado.
4. Department of Neurology, Program in Neuroscience, University of Colorado Health Sciences Center, Denver, Colorado.
5. Departments of Neurology, Medicine, Microbiology, Immunology, and the Program in Neuroscience, University of Colorado Health Sciences Center, Denver, Colorado.
6. Denver Veterans Affairs Medical Center, Denver, Colorado.