Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcmedresmethodol.biomedcentral.com/articles/10.1186/s12874-023-02001-8
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/37660025/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/37660025
Full text from	free resource	Diposit Digital de la Universitat de Barcelona	http://hdl.handle.net/2445/202051