1. Queen Square MS Centre, NMR Research Unit, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
2. Multiple Sclerosis Clinical Care and Research Centre, Department of Neurosciences, Federico II University of Naples, via Sergio Pansini, 5, Edificio 17 - piano terra, Napoli, 80131 Naples, Italy
3. Department of Human Neuroscience, Sapienza University of Rome, Italy
4. National Institute for Health Research, University College London Hospitals Biomedical Research Centre, London, UK