1. Department of Neurology, Danish Multiple Sclerosis Center, University of Copenhagen, 2082, Rigshospitalet, 9, Blegdamsvej, Copenhagen, 2100, Denmark
2. Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy
3. Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
4. Department of Neurology, Neuroimmunology, Multiple Sclerosis Centre of Catalonia (Cemcat), Vall d’Hebron University Hospital, Barcelona, Spain
5. Division of Neurology, St. Michael’s Hospital, University of Toronto, Toronto, ON, Canada
6. Univ. Lille, INSERM-U1172, CHU Lille, FHU Imminent, Lille, France
7. Department of Neurology, Institute of Translational Neurology, University of Münster, Münster, Germany
8. Nehme and Therese Tohme Multiple Sclerosis Center, American University of Beirut, Beirut, Lebanon
9. Ares Trading S.A., and affiliate of Merck Serono S.A., Eysins, Switzerland
10. Department of Neurology, Center for Clinical Neuroplasticity, Medical Park Loipl, Bischofswiesen, University of Erlangen, Germany