Name	Info	Provider	Link
COVID-19 (Coronavirus Disease 2019)	free resource	MedlinePlus Health Information	https://medlineplus.gov/covid19coronavirusdisease2019.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33646265.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33646265/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33646265
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-438
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:33646265
	free resource	scite Smart Citations	https://scite.ai/reports/33646265
	free resource	Silverchair Information Systems	https://rupress.org/jem/article-lookup/doi/10.1084/jem.20202617