1 Department of Neurology, P.J. Safarik University, Kosice, Slovak Republic.
2 Department of Neurology, University Hospital of L. Pasteur, Kosice, Slovak Republic.
3 Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK.
4 Department of Neurology and Centre of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
5 Department of Neurology, Comenius University and University Hospital Martin, Martin, Slovak Republic.
6 Department of Neurology, University of Szeged, Szeged, Hungary.
7 Department of Neurology and HUN-REN-PTE Clinical Neuroscience MR Research Group, University of Pecs, Medical School, Pécs, Hungary.
8 Department of Clinical Neurosciences, Scientific Park MEDIPARK, P. J. Safarik University, Kosice, Slovak Republic.
9 Department of Neurology, Zvolen Hospital, Zvolen, Slovak Republic.
10 Department of Neurology Silesian Centre of Neurology Katowice, Katowice, Poland.
11 Second Department of Neurology, Comenius University in Bratislava Faculty of Medicine, University Hospital Bratislava, Bratislava, Slovak Republic.
12 Department of Neurology, Semmelweis University, Budapest, Hungary.
13 Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovak Republic.
14 Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.