1. Department of Neurosurgery, University of Cambridge, Cambridge, UK
2. New York University, Langone Health, Graduate Medical Education, Department of Neurology, New York, NY, USA
3. Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Genève, Switzerland
4. Department of Neurosurgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
5. Department of Neurology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
6. Department of Neurosurgery, University of California Davis, Sacramento, CA, USA
7. Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
8. Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
9. Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, UK
10. University Spine Center, Balgrist University Hospital, Zurich, Switzerland
11. Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
12. Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto - Hospital de Santo António, Porto, Portugal
13. Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
14. Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
15. Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
16. Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, BC, Canada
17. Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
18. Department of Neurosurgery and the Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA