Name	Info	Provider	Link
	free resource	Korean Academy of Medical Sciences	https://jkms.org/DOIx.php?id=10.3346/jkms.2021.36.e114
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/33942578/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33942578
	free resource	scite Smart Citations	https://scite.ai/reports/33942578