[1] Landesklinikum Mistelbach Ganserndorf, Dept Neurol, Liechtensteinstr 67, A-2130 Mistelbach, Austria
[2] Paracelsus Med Univ, Dept Neurol, Christian Doppler Med Ctr, Salzburg, Austria
[3] Tech Univ Munich, Dept Neurol, Klinikum Rechts Isar, Munich, Germany
[4] Univ Tartu, Dept Neurol & Neurosurg, Tartu, Estonia
[5] Tartu Univ Hosp, Neurol Clin, Tartu, Estonia
[6] Selcuk Univ, Dept Neurol, Fac Med, Konya, Turkey
[7] Med Univ Innsbruck, Dept Neurol, Neurol Intens Care Unit, Innsbruck, Austria