1. Department of Neurology Goethe University Frankfurt, University Hospital Frankfurt am Main Germany
2. Department of Neurology University Hospital of Schleswig Holstein Kiel Germany
3. Department of Communication Disorders University of Canterbury Christchurch New Zealand
4. Institute of Neuroradiology Goethe University Frankfurt, University Hospital Frankfurt am Main Germany
5. Department of Neurology RKH Klinikum Ludwigsburg Ludwigsburg Germany