1. Department of Neurology; Université Libre de Bruxelles; Brussels Belgium
2. Department of Neurology; Brugmann University Hospital, Université Libre de Bruxelles; Brussels Belgium
3. Department of Neurology; Lausanne University Hospital; Lausanne Switzerland
4. Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health; Bethesda MD
5. Department of Neurology; Vita-Salute San Raffaele University; Milan Italy
6. Neuroimaging Research Unit, Institute of Experimental Neurology, San Raffaele Hospital; Vita-Salute San Raffaele University; Milan Italy
7. Department of Neuroscience, Drug and Child Health; University of Florence; Florence Italy
8. Internal Interdisciplinary Medicine, Center for Rare Cardiovascular and Immunological Diseases Lupus Clinic, Careggi University Hospital; University of Florence; Florence Italy
9. Multiple Sclerosis Center, Department of Neurology 2, Careggi University Hospital; University of Florence; Florence Italy
10. Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
11. Department of Radiology; Vita-Salute San Raffaele University; Milan Italy
12. Department of Radiology; Erasme University Hospital, Université Libre de Bruxelles; Brussels Belgium