Name	Info	Provider	Link
	free resource	MDPI	https://www.mdpi.com/resolver?pii=nu13030894
COVID-19 (Coronavirus Disease 2019)	free resource	MedlinePlus Health Information	https://medlineplus.gov/covid19coronavirusdisease2019.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33801989/
Full Text at the institutional repository	free resource	Andalusian Health Repository	http://hdl.handle.net/10668/17462
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33801989
	free resource	scite Smart Citations	https://scite.ai/reports/33801989