1. Department of Neurodegeneration, Center for Neurology and Hertie Institute for Clinical Brain Research, University of Tuebingen, Tuebingen, Germany
2. DZNE, German Center for Neurodegenerative Diseases, Tuebingen, Germany
3. Department of Diagnostic and Interventional Neuroradiology, University of Tuebingen, Tuebingen, Germany
4. Department of Neurology, Christian-Albrechts-University of Kiel, Kiel, Germany
5. Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands