Statistics from Altmetric.com
Contributors Both authors contributed equally to manuscript preparation, data gathering, final approval of the manuscript and finalising of the edited 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.
Provenance and peer review Not commissioned. Externally peer reviewed by Christian Lueck, Canberra, Australia.
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