Footnotes

• Contributors All authors listed have contributed sufficiently to the project.

• Funding This research received no specific grant from any funding agency in the public,commercial or not-for-profit sectors.

• 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 Commissioned; externally peer reviewed.

• Author note References which include a * have been selected as key references for this paper.