1. Department of Anatomy, Third Faculty of Medicine, Charles University, Ruska 87, 100 00 Prague, Czech Republic
2. Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein Campus Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
3. Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague, Czech Republic
4. Department of Neurology, Third Faculty of Medicine, University Hospital Kralovske Vinohrady, Charles University, Ruska 87, 100 00 Prague, Czech Republic
5. Department of Statistical Modeling, Institute of Computer Science, Academy of Sciences of the Czech Republic, Pod Vodarenskou vezi 271/2, 182 07 Prague, Czech Republic
6. Centre of Scientific Information, Third Faculty of Medicine, Charles University, Ruska 87, 100 00 Prague, Czech Republic