Footnotes

• Contributors TJV conceived with an idea about this work and approved the final manuscript. MUD and NNS were responsible for drafting the outline and main manuscript, as well as editing of the main manuscript. SI, PNS, PS and SM were responsible for critically reviewing the manuscript for intellectual content and editing of the main manuscript.

• Competing interests None declared.

• Patient consent Detail has been removed from this case description/these case descriptions to ensure anonymity. The editors and reviewers have seen the detailed information available and are satisfied that the information backs up the case the authors are making.

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