1. Department of Neurology, Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
2. Department of Molecular Cell Biology, Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
3. Department of Human Genetics, Ruhr-University Bochum, 44801 Bochum, Germany
4. Erich and Hanna Klessmann Institute, Heart and Diabetes Centre NRW, University Hospital of the Ruhr-University Bochum, 32545 Bad Oeynhausen, Germany
5. Institute of Physiology II, University of Münster, 48149 Münster, Germany
6. Department of Neurology and Clinical Neurophysiology, St. Marien-Hospital Borken, 46325 Borken, Germany
7. Department of Neuropathology, Charité—Universitätsmedizin Berlin, 10117 Berlin, Germany