1. Department of Neurology and Multiple Sclerosis Center; Wayne State University School of Medicine; Detroit; MI
2. Department of Neurology, Bamberg Academic Hospital; University of Erlangen; Bamberg; Germany
3. Department of Neurology and Neurosurgery; Russian National Medical Research University and Moscow Multiple Sclerosis Center; Moscow; Russia
4. Department of Neurology; Medical University of Lodz; Lodz; Poland
5. Department of Neurology, Buffalo Neuroimaging Analysis Center, Department of Neurology; University of Buffalo; Buffalo; NY