Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0264-410X(20)30644-7
Prenatal Care	free resource	MedlinePlus Health Information	https://medlineplus.gov/prenatalcare.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32527598/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32527598
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTPRC-1
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0264-410X(20)30644-7