Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0264-410X(15)00020-1
Vaccines	free resource	MedlinePlus Health Information	https://medlineplus.gov/vaccines.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25919170/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/25919170
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0264-410X(15)00020-1
	free resource	scite Smart Citations	https://scite.ai/reports/25919170