1. Division of Neurosurgery, Department of Surgery, Université de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Québec, Canada;
2. Department of Neurological Surgery, University of Pittsburgh, Pennsylvania;
3. Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia;
4. Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic;
5. Department of Neurosurgery, New York University Langone Medical Center, New York, New York;
6. Department of Radiation Oncology and Neurological Surgery, Taipei Veterans Hospital, Taipei, Taiwan; and
7. Department of Neurological Surgery, Cleveland Clinic, Cleveland, Ohio