1. University of South Carolina School of Medicine Greenville, Greenville, South Carolina;
2. Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida;
3. Division of Global Neurosurgery and Neurology, Duke University School of Medicine, Durham, North Carolina;
4. University of Miami Miller School of Medicine, Miami, Florida;
5. Department of Neurological Surgery, Washington University School of Medicine, St. Louis, Missouri; and
6. Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland