Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1525-1578(10)60133-X
Prenatal Testing	free resource	MedlinePlus Health Information	https://medlineplus.gov/prenataltesting.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20889556/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/20889556
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S1525-1578(10)60133-X