Footnotes

• Contributors OOO conceptualised the work, performed the review of literature and wrote the discussion. KH drafted the initial case summary. KG-E supervised the writing and editing 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; internally peer reviewed.