1. Department of Orthopaedics, Government Medical College, Dindigul, India.
2. Orthopaedic Research Group, Coimbatore, Tamil Nadu, India.
3. Department of Orthopaedics, Centro Hospitalar Universitário do Porto, Porto, Portugal
4. Department of Musculoskeletal Oncology, University of Calgary, Alberta, CA
5. Department of Neurological Surgery, USC Spine Center, Keck School of Medicine, Los Angeles, CA, USA
6. Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
7. USC Neurorestoration Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
8. Department of Orthopaedics, Emory University, Atlanta, GA, USA
9. Department of Neurosurgery, BG Klinikum Bergmannstrost Halle, Germany
10. Gerling Institute, Brooklyn, NY, USA
11. Department of Orthopedic Surgery, NYU Grossman School of Medicine, New York, USA
12. Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Portugal
13. Hospital CUF Trindade, Porto, Portugal
14. AO Spine, AO Foundation, Davos, Switzerland