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Handling editor Josef S Smolen
Contributors Drafting of the manuscript: EAMM, CHMvdE. Critical revision of the manuscript for important intellectual content: all authors. Final approval of the manuscript: all authors. All authors take responsibility for the integrity of the work and agreed to submit the response for publication.
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 Not required.
Provenance and peer review Commissioned; internally peer reviewed.
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