1. Institute of Orthopedics “Carlos E. Ottolenghi”, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
2. Department of Orthopaedic Surgery and Traumatology, Inselspital, University Hospital, University of Bern, Bern, Switzerland
3. Combined Neurosurgical and Orthopaedic Spine Program, Department of Orthopaedic Surgery, University of British Columbia, Vancouver, BC, Canada
4. University Medical Centers, Utrecht, The Netherlands
5. Center for Spinal and Scoliosis Surgery, Malteser Waldkrankenhaus St. Marien, Erlangen, Germany
6. Department of Orthopedics and Traumatology, Paracelsus Private Medical University Nuremberg, Nuremberg, Germany
7. Spine Unit, Sonnenhof Spital, University of Bern, Bern, Switzerland
8. Cajuru Hospital, Catholic University of Paraná, Curitiba, Brazil
9. Department of Neurosurgery, National Trauma Research Institute (NTRI), Melbourne, VIC, Australia
10. Rambam Health Care Campus, Haifa, Israel
11. Department of Spine Service, Indian Spinal Injuries Centre, Sector C, Vasant Kunj, New Delhi, India
12. Department of Neurology, State University of Campinas, Campinas-Sao Paulo, Brazil
13. “Prof. Dr. N. Oblu” Emergency Hospital, Iasi, Romania
14. Department of Orthopaedic Surgery, Rothman Institute, Thomas Jefferson University Hospital, Philadelphia, PA, USA
15. Klinika Úrazovej Chirurgie SZU a FNsP F.D.Roosevelta, Banská Bystrica, Slovakia
16. Department of Orthopaedics and Spine Surgery, Ganga Hospital, Coimbatore, Tamil Nadu, India
17. Department of Neurosurgery, Prince Mohammed Bin Abdulaziz Hospital, Riyadh, Saudi Arabi
18. Department of Neurosurgery, Mansoura University, Mansoura, Egypt
19. Klinik für Orthopädie, Unfallchirurgie und plastische Chirurgie, Universitätsklinik Leipzig, Leipzig, Germany
20. Department of Orthopaedic and Trauma Surgery, Assiut University Medical School, Assiut, Egypt
21. Department of Orthopaedics and Sports Medicine, University of Washington Harborview Medical Center, Seattle, WA, USA