1. Mellen Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
2. Biogen, Cambridge, MA, USA
3. Lou Ruvo Center for Brain Health, Cleveland Clinic, Las Vegas, NV, USA
4. Department of Neurology, University of Rochester Medical Center, Rochester, NY, USA
5. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
6. Department of Neurology, Washington University in St. Louis, St. Louis, MO, USA
7. OhioHealth Multiple Sclerosis Center, Riverside Methodist Hospital, Columbus, OH, USA
8. Centre d’Esclerosi Múltiple de Catalunya, Department of Neurology and Neuroimmunology, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
9. Multiple Sclerosis Center Dresden, Center of Clinical Neuroscience, Department of Neurology, University Clinic Carl-Gustav Carus, Dresden, Germany