[1] Med Univ Vienna, Dept Neurol, Vienna, Austria
[2] Med Univ Vienna, Comprehens Ctr Clin Neurosci & Mental Hlth, Vienna, Austria
[3] Bern Univ Hosp, Bern, Switzerland
[4] Univ Bern, Dept Neurol, Bern, Switzerland
[5] Med Univ Innsbruck, Dept Neurol, Innsbruck, Austria
[6] Kepler Univ Hosp GmbH, Dept Neurol, Med Campus 3, Linz, Austria