1 Institute of Clinical Neuroimmunology, Biomedical Center, University Hospital, Campus Martinsried-Grosshadern, Ludwig-Maximilians University, D-81377 Munich, Germany; reinhard.hohlfeld@med.uni-muenchen.de steiny@stanford.edu.
2 Munich Cluster of Systems Neurology, 81377 Munich, Germany; and.
3 Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA 94305.