1 Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité, University Medicine Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.
2 Department of Neurology and Stereotactic Neurosurgery, University Medicine of Magdeburg, Magdeburg, Germany.
3 Department of Neurosurgery, Charité, University Medicine Berlin, Campus Mitte, Berlin, Germany.
4 Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité, University Medicine Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany. andrea.kuehn@charite.de.