Name	Info	Provider	Link
	free resource	S. Karger AG, Basel, Switzerland	https://doi.org/10.1159/000511760
COVID-19 Vaccines	free resource	MedlinePlus Health Information	https://medlineplus.gov/covid19vaccines.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33202404.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33202404/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33202404