Statistics from Altmetric.com
Contributors DJvdW and IAZ wrote the manuscript. GCW, AF and MAN provided the images and interpretation thereof. ST and DAG edited the manuscript. All the authors approved the final article.
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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