1. Department of Neurology, University Hospital Zurich, 8091 Zurich, Switzerland
2. Department of Neurology, University of Washington, Seattle, WA 98195, USA
3. Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
4. Faculty of Medicine, University of Zurich, 8091 Zurich, Switzerland