Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1096-7192(09)00138-3
Congenital Heart Defects	free resource	MedlinePlus Health Information	https://medlineplus.gov/congenitalheartdefects.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19553149/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/19553149