Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1053-0770(19)31211-X
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/31899138/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31899138