[1] Univ Wurzburg, Dept Neurol, D-97070 Wurzburg, Germany
[2] Univ Wurzburg, Dept Human Genet, D-97070 Wurzburg, Germany
[3] Univ Marburg, Dept Human Genet, D-35032 Marburg, Germany
[4] Univ Gottingen, Dept Clin Neurophysiol, D-3400 Gottingen, Germany
[5] Univ Halle, Dept Neurol, Halle, Germany
[6] Bernhard Nocht Inst Trop Med, Hamburg, Germany