1. Department of Neurology, Neuroscience Amsterdam, VUmc Multiple Sclerosis Center Amsterdam, VU University Medical Center, Amsterdam, the Netherlands
2. Department of Radiology and Nuclear Medicine, Neuroscience Amsterdam, VUmc MS Center Amsterdam, VU University Medical Center, Amsterdam, the Netherlands
3. Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, the Netherlands
4. Department of Neurology, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
5. Department of Neurology, Medical Faculty, University of Köln, Köln, Germany
6. Institutes of Neurology and Healthcare Engineering, University College London, London, United Kingdom
7. Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany