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Contributors CEE involved in acquisition of data from patient's notes and from previous published articles, drafted the work and revised it as appropriate, approved the final version for publication and agreed to be accountable for all aspects of the work; MT came up with the concept for the publication and assisted in the acquisition and analysis of data, critically revised the report, approved the final version for publication.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.
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