[1] Univ Klinikum, Klin & Poliklin Neurochirurg, D-93053 Regensburg, Germany
[2] Goethe Univ Frankfurt, Zentrum Neurol & Neurochirurg, Neurol Klin, Frankfurt, Germany
[3] Neurol Univ Klin, Rostock, Germany
[4] Univ Kiel, Neurol Klin, D-2300 Kiel, Germany
[5] Deutsch Klin Diagnost, FB Neurol, D-6200 Wiesbaden, Germany
[6] Charite, Zentrum Neurol, D-13353 Berlin, Germany
[7] Hannover Med Sch, Neurol Klin Klin Neurophysiol, D-30623 Hannover, Germany
[8] Paracelsus Elena Klin, Kassel, Germany
[9] Univ Klinikum, Klin & Poliklin Neurol, Cologne, Germany