Name	Info	Provider	Link
	free resource	HighWire	https://gh.bmj.com/lookup/pmidlookup?view=long&pmid=34011504
Vaccines	free resource	MedlinePlus Health Information	https://medlineplus.gov/vaccines.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34011504/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34011504
	free resource	scite Smart Citations	https://scite.ai/reports/34011504