1. Division of Neurology, University of Toronto, Toronto, ON, Canada/Department of Neurology and Neurosurgery, Johns Hopkins University, Baltimore, MD, USA
2. Laboratory for Neuroimaging Research, Partners Multiple Sclerosis Center, Departments of Neurology and Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
3. Department of Neurology and Neurosurgery, Johns Hopkins University, Baltimore, MD, USA
4. Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
5. Translational Neuroradiology Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Rockville, MD, USA
6. Departments of Diagnostic Radiology and Neurosurgery, Yale University, New Haven, CT, USA
7. Department of Neurology, University of Southern California, Los Angeles, CA, USA
8. Advanced Imaging Research Center, Oregon Health & Science University, Portland, OR, USA
9. Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
10. Department of Neurology, Cedars-Sinai Medical Center, The North American Imaging in Multiple Sclerosis (NAIMS), Los Angeles, CA, USA