1. Club Francophone de la Sclerose en Plaques, CHU Nice et CHU Rennes, Nice, France
2. Department of Neurology, Division of Autoimmune Neurology and Multiple Sclerosis, Mayo Clinic and Foundation, Rochester, USA
3. Department of Neurology, Istanbul University Cerrahpasa School of Medicine, Istanbul, Turkey
4. Yale Multiple Sclerosis Center, Department of Neurology and Diagnostic Radiology, Yale University School of Medicine, New Haven, USA
5. Barrow Neurological Institute, Department of Neurology, Neuro-Immunology Division, BNI Multiple Sclerosis Center, Phoenix, USA