1 Center of Clinical Neuroscience, Department of Neurology, Carl Gustav Carus University Hospital Dresden, Fetscherstr. 74, 01307 Dresden, Germany.
2 Novartis Pharma GmbH, Nueremberg, Germany.
3 Center of Clinical Neuroscience, Department of Neurology, Carl Gustav Carus University Hospital Dresden, Fetscherstr. 74, 01307 Dresden, Germany.. Electronic address: Tjalf.Ziemssen@uniklinikum-dresden.de.