Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0264-410X(13)01381-9
Flu	free resource	MedlinePlus Health Information	https://medlineplus.gov/flu.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24126211/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/24126211
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0264-410X(13)01381-9
	free resource	scite Smart Citations	https://scite.ai/reports/24126211