Footnotes

• Contributors DB: case management, acquisition of data, analysis and interpretation of the case, drafting and critical revision of the article, editing and final approval. AM: case management, drafting the article. DS: conception and design, case management, interpretation of case, critical revision of the article, editing and final approval.

• 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.

• Patient consent for publication Parental/guardian consent obtained.

• Provenance and peer review Not commissioned; externally peer reviewed.