Name	Info	Provider	Link
Health Problems in Pregnancy	free resource	MedlinePlus Health Information	https://medlineplus.gov/healthproblemsinpregnancy.html
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0148-7299&date=1991&volume=41&issue=4&spage=426
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:1776631