1. Department of Neurology, Christian‐Albrechts‐University, Kiel, Germany
2. NeuroImage‐Nord, Hamburg‐Kiel‐Lübeck, Germany
3. Department of Speech and Language Pathology, Fresenius University of Applied Sciences, Hamburg, Germany
4. Department of Neurology, University Medical Centre, Leipzig, Germany
5. Danish Research Centre for Magnetic Resonance, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark