1. Judith Jaffe Multiple Sclerosis Center, Weill Cornell Medicine, New York City, NY, USA
2. Department of Radiology/Nuclear Medicine, Weill Cornell Medicine, New York City, NY, USA
3. Cornell MRI Research Lab, New York City, NY, USA
4. Department of Mathematics, College of Sciences and Health Professions, Cleveland State University, Cleveland, OH, USA
5. Yale Multiple Sclerosis Center, New Haven, CT, USA