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Correction notice This article has been corrected since it was published Online First. Author order has been amended.
Contributors AG and MH wrote the manuscript. AG collected the clinical information and added to the literature review. DL performed a literature review and wrote early drafts. JM provided oversight and approved the final version of the 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 None declared.
Provenance and peer review Not commissioned; externally peer reviewed by Hugh Willison, Glasgow, UK.