Footnotes

• Contributors IN wrote the first full draft and all authors contributed to revising the following drafts. BC was involved in the care of the patient mentioned in this report. All authors approved the final manuscript before submission.

• 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.