1. Department of Neurosurgery, Neurological Institute, Cleveland Clinic;
2. Cleveland Clinic Lerner College of Medicine, Case Western Reserve University;
3. School of Medicine, Case Western Reserve University;
4. Center for Neurological Restoration, Neurological Institute, Cleveland Clinic; and
5. Mellen Center for Multiple Sclerosis Treatment and Research, Neurological Institute, Cleveland Clinic, Cleveland, Ohio