[1] Univ Erlangen Nurnberg, Dept Neurol, D-91054 Erlangen, Germany
[2] Klinikum Neumarkt, Dept Neurol, Neumarkt, Germany
[3] Nuremberg Municipal Acad Hosp, Dept Neurol, Nurnberg, Germany
[4] Klinikum Hohe Warte Bayreuth, Dept Neurol, Bayreuth, Germany