1 Division of Multiple Sclerosis and Related Neuroinflammatory Disorders, Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
2 Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St Louis, Missouri, USA.
3 Department of Neurosurgery, Washington University School of Medicine, St Louis, Missouri, USA.
4 Neurosurgery of St. Louis, St. Louis, Missouri, USA.
5 Department of Neurology, Washington University School of Medicine, St Louis, Missouri, USA.