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Contributors KH and JO provided patient care. KH, JO and TA wrote the initial draft of the manuscript. FS supervised the study and suggested critical revisions regarding important intellectual content. All authors approved the final version as submitted to the journal.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent for publication Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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