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The authors report the following conflicts of interest or sources of funding: R.H. reports payments for lectures and patents from Arthrex, and royalties from Wolters-Kluwer. S.S.B. reports payments for consultancy and patents from Arthrex, and royalties from Arthrex and Wolters-Kluwer. Full ICMJE author disclosure forms are available for article online, as supplementary material.