1. Department of Radiology, MS Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
2. Department of Neurology, MS Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands; Department of Clinical Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
3. Multiple Sclerosis Centre Nijmegen, Nijmegen, The Netherlands
4. Department of Clinical Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
5. Department of Radiology, LUMC, Leiden, The Netherlands
6. Department of Neurology, MS Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands