1 Department of Neurological Surgery, Wexner Medical Center, Center for Neuromodulation, Ohio State University, 410 West 10th Avenue, Columbus, OH 43210, USA. Electronic address: Milind.deogaonkar@osumc.edu.
2 Department of Neurosurgery, Center for Neurological Restoration, Cleveland Clinic, 9500 Euclid Avenue, S31, Cleveland, OH 44195, USA. Electronic address: machada@ccf.org.
3 Department of Neurosurgeryand Neurology, Jefferson Medical College, Thomas Jefferson University, 909 Walnut Street, 2nd Floor, Philadelphia, PA 19107, USA. Electronic address: ashwini.sharan@jefferson.edu.