Name	Info	Provider	Link
	free resource	BioMed Central	https://cardiovascularultrasound.biomedcentral.com/articles/10.1186/s12947-020-00230-1
Heart Surgery	free resource	MedlinePlus Health Information	https://medlineplus.gov/heartsurgery.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33388071/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33388071
	free resource	scite Smart Citations	https://scite.ai/reports/33388071