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Twitter @fdellavilla, @adamvirgile
Contributors FDV and MB wrote the first draft. AV produced the infographic. All authors provided intellectual content to the final version.
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 Not commissioned; externally peer reviewed.
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