1. Mellen Center for Multiple Sclerosis, Neurological Institute, and Lerner College of Medicine, Cleveland Clinic, Cleveland, OH, USA
2. Department of Brain Repair and Rehabilitation, University College London Institute of Neurology, Faculty of Brain Sciences, London, UK
3. Centre for Neuroscience and Trauma, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, UK
4. Multiple Sclerosis International Federation, London, UK
5. Multiple Sclerosis Society, London, UK
6. National MS Society, New York, NY, USA
7. Department of Neurology, Scientific Institute San Raffaele, Milan, Italy
8. Department of Psychiatry, University of Toronto, Canada
9. National Hospital for Neurology and Neurosurgery, London, UK
10. MS Society of Canada, Toronto, ON, Canada
11. Center for Neurology and Experimental Therapies, Sapienza University, Rome, Italy
12. Fast Forward, LLC, New York, NY, USA
13. Italian MS Society, Genoa, Italy
14. MS Research Foundation, Voorschoten, The Netherlands