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EL reports being a consultant for Medtronic. YY reports being a consultant to Vision RT and Varian Medical Systems, and being a speaker for the Chordoma Foundation and the Institute for Medical Education. IL reports being a consultant to Globus, SpineWave, DePuy\/Synthes, Medtronic, and Brainlab outside of the current study, MB reports being a member of the Speaker\u2019s Bureau for Varian Medical Systems and Brainlab, has received royalties from DePuy Synthes, and has received royalties\/fellowship support from Globus Spine for work performed outside of the current study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The article does not contain any studies with human participants or animals performed by any of the authors.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was not obtained as part of this study as it did not involve human or animal participants.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}