1. Department of Neurology, University of Muenster, Muenster, Germany
2. Department of Neurology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
3. Department of Neurology, University Hospital of Wuerzburg, Wuerzburg, Germany
4. Department of Neuropathology, Charité-Universitätsmedizin, Berlin, Germany