Footnotes

• 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.