1. Multiple Sclerosis Centre of Catalonia (Cemcat), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
2. Sorbonne Université, Inserm, CNRS, UMR7225, Institut du Cerveau et de la Moelle épinière (ICM), Paris, France/ Department of Neurology, Saint Antoine Hospital, AP-HP, Paris, France
3. Department of NEUROFARBA, University of Florence, Florence, Italy/IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
4. Neurology Clinic and Policlinic, Departments of Medicine, Clinical Research and Biomedicine and Research Center for Clinical Neuroimmunology and Neuroscience Basel, University Hospital Basel, University of Basel, Basel, Switzerland
5. Clinical Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
6. Division of Neurology, Department of Clinical Neuroscience, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
7. Department of Neurology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
8. Multiple Sclerosis and Neuroimmunology Program, University Hospitals of Cleveland, Case Western Reserve University School of Medicine, Cleveland Medical Center, Cleveland, OH, USA
9. Sheba Medical Center at Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
10. Department of NEUROFARBA, University of Florence, Florence, Italy
11. Department of Neurology, Neurosurgery and Medical Genetics, Pirogov Russian National Research Medical University, Moscow, Russia/Institute of Clinical Neurology and Department of Neuroimmunology, Federal Center of Brain Research and Neurotechnologies, Moscow, Russia
12. St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA
13. Department of Neurology, Washington University in St. Louis, St. Louis, MO, USA
14. Preventive Neurology Unit, Wolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK/Department of Neurology, Royal London Hospital, Barts Health NHS Trust, London, UK
15. Center for Research on Neuroimmunological Diseases, FLENI, Buenos Aires, Argentina
16. Neurology Unit, Neurorehabilitation Unit and Neurophysiology Service, IRCCS San Raffaele Scientific Institute, Milan, Italy/Vita-Salute San Raffaele University, Milan, Italy
17. Department of Neurology and Epidemiology, Johns Hopkins University, Baltimore, MD, USA
18. Department of Neurology, Razi Hospital, Tunis, Tunisia
19. Department of Neuroinflammation, Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology, London, UK
20. Department of Neurology, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
21. Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
22. Neurologic Clinic and Policlinic, Departments of Medicine, Clinical Research, Biomedicine, and Biomedical Engineering, University Hospital, University of Basel, Basel, Switzerland
23. Neurology Department, Hospital Santo António dos Capuchos, Centro Hospitalar Universitário Lisboa Central, Lisbon, Portugal
24. CRCSEP Côte d’Azur, CHU de Nice Pasteur 2, UR2CA-URRIS, Université Nice Côte d’Azur, Nice, France
25. Sorbonne Université, Inserm, CNRS, UMR7225, Institut du Cerveau et de la Moelle épinière (ICM), Paris, France/Sorbonne University, Paris Brain Institute—ICM, Assistance Publique Hôpitaux de Paris, Inserm, CNRS, Hôpital de la Pitié Salpêtrière, CIC Neurosciences, Paris, France
26. Department of Neurology, Danish Multiple Sclerosis Center, Copenhagen University Hospital, Copenhagen, Denmark
27. Department of Neurology, Hospital Clínico San Carlos, Idissc, Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
28. Center for Advanced Neurological Research, KS Hegde Medical Academy, Nitte (Deemed to be University), Mangalore, India
29. Servicio de Enfermedades Infecciosas, Hospital Universitari Vall d’Hebron, Barcelona, Spain
30. Collegium Medicum, Department of Neurology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland/Center of Neurology, Lodz, Poland
31. Clinical Outcomes Research Unit, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC, Australia
32. Department of Neurology, Istanbul University Cerrahpasa School of Medicine, Istanbul, Turkey
33. Department of Neurology, Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
34. Department of Health Sciences, University of Genoa and IRCCS Ospedale Policlinico San Martino, Genoa, Italy
35. Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari “Aldo Moro,” Bari, Italy
36. Hadassah-Hebrew University Medical Center, Department of Neurology, The Agnes-Ginges Center for Neurogenetics Jerusalem, Jerusalem, Israel
37. Service de neurologie, sclérose en plaques, pathologies de la myéline et neuro-inflammation, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Lyon, France/Centre des Neurosciences de Lyon, Observatoire Français de la Sclérose en Plaques, INSERM 1028 et CNRS UMR5292, Lyon, France/Université Claude Bernard Lyon 1, Faculté de médecine Lyon Est, Lyon, France
38. Department of Neurology, Mayo Clinic, Rochester, MN, USA
39. Department of Neurology with Institute of Translational Neurology, University of Muenster, Münster, Germany
40. Department of Neurology, University of Rostock, Rostock, Germany
41. MS Clinic, Instituto Neurológico de Colombia and Medicarte, Medellin, Colombia