1. Department of Neurology, Institute for Clinical Sciences, Malmö, Sweden
2. Neurology, Charité Berlin, Berlin, Germany
3. Department of Neurology and Neurophysiology, AMEOS Klinikum Neustadt, Neustadt i. H., Germany
4. Department of Neurology, Charité Campus Virchow, Berlin, Germany
5. Neurologie, Neurologisches Zentrum der Segeberger Kliniken, Bad Segeberg, Germany