[1] Med Univ Graz, Dept Neurol, Auenbrugger Pl 22, A-8036 Graz, Austria
[2] Med Univ Graz, Dept Radiol, Div Neuroradiol Vasc & Intervent Radiol, Graz, Austria
[3] Med Univ Graz, Dept Neurol, Graz, Austria
[4] Gen Hosp Amstetten, Dept Neurol, Amstetten, Austria
[5] LKH Graz II, Dept Neurol, Graz, Austria
[6] Karl Landsteiner Univ Hlth & Sci, Dept Psychiat & Psychotherapy, Tulln, Austria
[7] Hosp Barmherzige Bruder Vienna, Dept Neurol, Vienna, Austria