Name	Info	Provider	Link
	free resource	Korean Academy of Medical Sciences	https://jkms.org/DOIx.php?id=10.3346/jkms.2015.30.9.1308
Health Problems in Pregnancy	free resource	MedlinePlus Health Information	https://medlineplus.gov/healthproblemsinpregnancy.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26339172/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26339172
	free resource	scite Smart Citations	https://scite.ai/reports/26339172