1. Department of Neurological Surgery, Mayo Clinic Florida, Jacksonville, Florida, USA;
2. Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic Florida, Jacksonville, Florida, USA;
3. David Geffen School of Medicine, University of California, Los Angeles, California, USA;
4. Department of Anatomical Sciences, St. George's University, True Blue, Grenada;
5. Department of Neurosurgery, Tulane University School of Medicine, New Orleans, Louisiana, USA;
6. Department of Neurology, Tulane University School of Medicine, New Orleans, Louisiana, USA;
7. Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, USA;
8. Department of Surgery, Tulane University School of Medicine, New Orleans, USA;
9. Department of Orthopedic Surgery, Columbia Medical Center New York, New York, USA;
10. Center for Spine Health, Department of Neurosurgery, Neurological Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA