Name	Info	Provider	Link
	free resource	Ingenta plc	http://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.9.1900606
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33663647/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33663647
	free resource	scite Smart Citations	https://scite.ai/reports/33663647