1. Department of Neurology, Municipal Hospital Landshut, Landshut, Germany
2. Department of Neurology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
3. Department of Laboratory Medicine, Paracelsus Medical University, Salzburger Landeskliniken, Salzburg, Austria
4. Department of Neurology, Medical Faculty, University Hospital Erlangen, Erlangen, Germany