1. Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
2. Orthopedic Department, Sonnenhofspital, Bern, Switzerland
3. Department of Neurosurgery, State University of Campinas, Campinas, Brazil
4. Department of Orthopaedic and Trauma Surgery, Assiut University Medical School, Assiut, Egypt
5. National Trauma Center, Bir Hospital, National Academy of Medical Sciences, Kathmandu, Nepal
6. Center for Spinal Surgery and Neurotraumatology, BG Unfallklinik Frankfurt am Main gGmbH, Frankfurt, Germany
7. Departement of Neurosurgery, The Alfred Hospital, Melbourne, Australia
8. Department of Orthopaedics, University of Washington, Seattle, WA
9. Department of Orthopaedics, Cajuru Hospital, Catholic University of Paraná, Curitiba, Brazil
10. Department of Orthopaedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
11. “Prof. Dr. N. Oblu” Emergency Hospital, Iasi, Romania
12. Department of Orthopaedic and Spine Surgery, Ganga Hospital, Coimbatore, India
13. Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN
14. Center for Spinal and Scoliosis Therapy, Malteser Waldkrankenhaus St. Marien, Erlangen
15. IRRCS Istituto Ortopedico Galeazzi, Milano
16. National Ilizarov Medical Research Center for Traumatology and Ortopaedics, Russia
17. Theater and Spine Surgery, Tampere University Hospital, Finland Unit, Tampere, Finland
18. Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, Oxford, England
19. Toronto Western Hospital, University Health Network, Toronto, ON, Canada