1 Multiple Sclerosis Centre of Catalonia (Cemcat), Neurology Department, Vall d'Hebron University Hospital, Barcelona, Spain.
2 Department of Neurosciences, University of California, San Diego, San Diego, CA, USA.
3 Mellen Center for Multiple Sclerosis, Department of Neurology, Neurological Institute, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, USA.
4 Vita-Salute San Raffaele University, Milan, Italy; Neuroimaging Research Unit, Division of Neuroscience, and Neurology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.
5 NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK; Biomedical Research Centre, University College London Hospitals (UCLH), National Institute for Health Research (NIHR), London, UK.
6 NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, UK.
7 Department of Neuroscience, School for Translational Medicine, Monash University and The Alfred Multiple Sclerosis and Neuroimmunology Service, Melbourne, VIC, Australia.
8 Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
9 Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, Naples, Italy; Multiple Sclerosis Unit, Policlinico Federico II University Hospital, Naples, Italy.
10 Department of Neurology, Research Institute and Hospital of National Cancer Center, Goyang, Republic of Korea.
11 Institute of Neurology, University College London, London, UK.