Footnotes

• Contributors KEO completed a literature review, first draft and revised subsequent drafts, as well as preparing the figures. SM, RA, KM and LH edited drafts. KEO, RA and LH selected the case for writing a case report. All authors approved final draft and figures.

• 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.

• Patient consent for publication Parental/guardian consent obtained.