[1] Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford
[2] University College London, London
[3] National Institute for Health Research, University College London Hospitals Biomedical Research Centre, London
[4] Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam
[5] Neurology and Neurometabolic Unit, Department of Neurological and Behavioural Sciences, University of Siena, Siena
[6] Department of Neurology, Medical University of Graz, Graz
[7] Division of Neuroradiology, Vascular and Interventional Radiology, Medical University of Graz, Graz
[8] Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan
[9] Neuropathology Department, John Radcliffe Hospital, Oxford
[10] NeuroCure Clinical Research Center and Experimental, Clinical Research Center, Max Delbrück Center for Molecular Medicine, Charité - Universitätsmedizin Berlin, Berlin
[11] Magnetic Resonance Unit, Department of Radiology, Hospital Universitari Vall d'Hebron, Universitat Autonoma de Barcelona, Barcelona
[12] Department of Neurology, University Hospital Basel, Basel
[13] Institute of Neurology, Queen Square, London
[14] Department of Neurology, Rigshospitalet Glostrup, University of Copenhagen, Copenhagen
[15] Multiple Sclerosis Centre, Department of Neurosciences, San Camillo-Forlanini Hospital, Rome
[16] Centre d'Esclerosi Multiple de Catalunya (Cemcat), Department of Neurology/Neuroimmunology, Hospital Universitari Vall d'Hebron, Universitat Autonoma de Barcelona, Barcelona
[17] Division of Neurosciences, School of Medicine, University of Nottingham, Queen's Medical Centre Campus, Nottingham