Footnotes

• Contributors SK, MFM, KZ and BC planned the study and wrote the paper. MFM submitted the paper.

• 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.

• Ethics approval The Ethics Committee of Ahvaz Jundishapur University of Medical Sciences.

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

• Correction notice This paper has been amended since it was published Online First. Owing to a scripting error, some of the publisher names in the references were replaced with ’BMJ Publishing Group'. This only affected the full text version, not the PDF. We have since corrected these errors and the correct publishers have been inserted into the references.