Statistics from Altmetric.com
Handling editor Simon Carley
Contributors We are not using figures/tables from another publication. JRB was the first author of the article and RK was the secondary author.
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.
Provenance and peer review Not commissioned; externally peer reviewed.
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