1. Department of Orthopaedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
2. Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
3. Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
4. The International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL, USA
5. Neuroscience Institute, Virginia Mason Medical Center, Seattle, WA, USA
6. Research Department, AO Spine International, Davos, Switzerland
7. Department of Orthopaedics & Traumatology, The University of Hong Kong, Hong Kong SAR, China
8. Department of Orthopaedic Surgery, University of Arizona College of Medicine, Phoenix, AZ, USA
9. Department of Orthopaedic and Trauma Surgery, Tampere University Hospital, Tampere, Finland
10. Department of Neurosurgery, John Hopkins University, Baltimore, MD, USA
11. Department of Orthopaedic and Trauma Surgery, Assiut University Medical School, Assiut, Egypt
12. Department of Orthopaedics, Churruca Hospital de Buenos Aires, Buenos Aires, Argentina