Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0165-2427(08)00019-6
Infections and Pregnancy	free resource	MedlinePlus Health Information	https://medlineplus.gov/infectionsandpregnancy.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18295905/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/18295905
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD4-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/non-CPTAC-3897