1. Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
2. William S. Middleton VA Medical Center, Madison, WI, USA
3. Department of Neurology, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
4. Mellen Center for Multiple Sclerosis, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
5. Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
6. Cleveland Clinic Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
7. Department of Neurology, Instituto de Investigacion Sanitaria San Carlos (IdISSC), Hospital Clinico San Carlos, Madrid, Spain