1 Dept. of Neurology and Clinical Neurophysiology, Schön Klinik München Schwabing, Munich, Germany. Electronic address: Urban.Fietzek@Schoen-Kliniken.de.
2 Dept. of Neurology and Clinical Neurophysiology, Schön Klinik München Schwabing, Munich, Germany.
3 Dept. of Neurology and Clinical Neurophysiology, Schön Klinik München Schwabing, Munich, Germany; Department of Neurology, Technical University of Munich (TUM), Munich, Germany.
4 Department of Neurology, SRH Kliniken Landkreis Sigmaringen, Sigmaringen, Germany.