1. From the Department of Neurology (V.R., L.C., P.S., J.P.) and Department of Imaging Methods (J.B., R.T., J.F.), Faculty of Medicine in Plzen, Charles University in Prague and Faculty Hospital Plzen, Plzen, Czech Republic; Department of Mathematics, Faculty of Applied Sciences, University of West Bohemia Plzen, Plzen, Czech Republic (M.F.); and Department of Histology and Embryology and Biomedical Centre, Faculty of Medicine in Plzen, Charles University in Prague, Plzen, Czech Republic (J.P.).