Name	Info	Provider	Link
	subscription/membership/fee required	Ediciones Doyma, S.L.	http://www.elsevier.es/en/linksolver/ft/pii/S0025-7753(20)30315-8
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0025-7753(20)30315-8
Flu	free resource	MedlinePlus Health Information	https://medlineplus.gov/flu.html
	free resource	scite Smart Citations	https://scite.ai/reports/32571618