1 Department of Neurology, University Medical Center Göttingen, Göttingen, Germany; Department of Anesthesiology, University Medical Center Göttingen, Göttingen, Germany. Electronic address: CStephani@med.uni-goettingen.de.
2 Department of Neurology, University Medical Center Göttingen, Göttingen, Germany.
3 Department of Neurology, University Medical Center Göttingen, Göttingen, Germany; Department of Anesthesiology, University Medical Center Göttingen, Göttingen, Germany.
4 Department of Neurology, University Medical Center Göttingen, Göttingen, Germany; Department of Neurology, Ludwig Maximilians University, Munich, Germany.