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Contributors All authors were involved in the conception or design of the editorial. MO’K drafted the paper. All authors contributed to all drafts of the paper and approved the final manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests KO’S serves in a voluntary capacity as Senior Associate Editor of BJSM.
Patient consent Not required.
Provenance and peer review Not commissioned; externally peer reviewed.