1. Midwest Neurosurgical Associates, Oak Brook, Illinois;
2. Emergency and Essential Surgical Care Programme, World Health Organization, Geneva, Switzerland;
3. Global Neurosurgery Initiative, Program in Global Surgery and Social Change, Harvard Medical School, Boston, Massachusetts;
4. Department of Neurosurgery, Regional University Hospital of Malaga, Spain;
5. Department of Neurosurgery, Humanitas University, Milan, Italy; and
6. Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania