1 Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK; Department of Neurology, University Medical Center Göttingen, Göttingen, Germany.
2 Department of Neurology, University Medical Center Göttingen, Göttingen; Center for Biostructural Imaging of Neurodegeneration (BIN), DFG Cluster of Excellence Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University Medical Center Göttingen, Göttingen; Department of Neurology, Rechts der Isar Hospital of the Technical University Munich, Munich, Germany.