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Contributors Study design: JG, MS, AB and EB. Acquisition, analysis and interpretation of data: JG, MS, AD, AB and EB. Manuscript preparation: JG, MS, AB and EB. Overall supervision: MS, AB and EB.
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 medical ethical committee of the University Medical Center Groningen.
Provenance and peer review Not commissioned; internally peer reviewed.
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