1. Department of Orthopaedic and Neurological Surgery, NYU Langone Orthopedic Hospital, New York, New York;
2. Department of Orthopaedic Surgery, New York Spine Institute, New York, New York;
3. Department of Orthopaedics, Lenox Hill Hospital, Northwell Health, New York, New York;
4. Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, Virginia;
5. Department of Spine Surgery, Denver International Spine Center, Presbyterian St. Luke’s/Rocky Mountain Hospital for Children, Denver, Colorado;
6. Department of Orthopaedic Surgery, Warren Alpert School of Medicine, Brown University, Providence, Rhode Island;
7. Norton Leatherman Spine Center, Louisville, Kentucky;
8. Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania;
9. Department of Neurological Surgery, University of California, San Francisco, California;
10. Division of Orthopaedic Surgery, Scripps Clinic, La Jolla, California;
11. Spine Institute of Louisiana, Shreveport, Louisiana;
12. Department of Orthopaedic Surgery, University of California, Davis, California;
13. Department of Orthopaedic Surgery, Johns Hopkins Medical Center, Baltimore, Maryland;
14. Division of Orthopaedic Surgery, University of Toronto, Ontario, Canada;
15. Department of Orthopaedic Surgery, Columbia University, New York, New York;
16. Department of Orthopaedic Surgery, Southwest Scoliosis Center, Dallas, Texas;
17. Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri;
18. Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, Washington;
19. Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas;
20. Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina; and
21. Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York