1. Department of Neurology; University Medical Center Göttingen; Göttingen Germany
2. Institute of Pathophysiology; University Medicine Greifswald; Karlsburg Germany
3. Department of Clinical Neurophysiology; University Medical Center Göttingen; Göttingen Germany
4. Department of Neuroimmunology; Institute for Multiple Sclerosis Research and Hertie Foundation; University Medical Center Göttingen; Göttingen Germany
5. Department of Pediatrics; University Medical Center Göttingen; Göttingen Germany
6. Department of Genetic Epidemiology; University Medical Center Göttingen; Göttingen Germany