1. Department of Neurologic Surgery and Brain Repair, University of South Florida, Tampa, Florida, USA;
2. Division of Neurosurgery, Fleming Neuroscience Institute, Allentown, Pennsylvania, USA;
3. Department of Neurologic surgery, Mayo Clinic, Rochester, Minnesota, USA;
4. Surgical Theater, Mayfield Village, Beachwood, Ohio, USA;
5. Department of Neurosurgery, MedStar Georgetown University Hospital, Washington, District of Columbia, USA