Name	Info	Provider	Link
Flu	free resource	MedlinePlus Health Information	https://medlineplus.gov/flu.html
	free resource	European Centre for Disease Prevention and Control (ECDC)	http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=20837
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:24993555