1. Department of Neurosurgery, University of Arizona, Tucson, United States
2. College of Medicine, The University of Arizona College of Medicine - Tucson, United States
3. Department of Cellular and Molecular Medicine, University of Arizona, Tucson, United States
4. Global Neurosurgical Alliance, Tucson, Arizona, United States
5. College of Medicine, The University of Arizona College of Medicine - Phoenix, Arizona, United States.