Name	Info	Provider	Link
Twins, Triplets, Multiple Births	free resource	MedlinePlus Health Information	https://medlineplus.gov/twinstripletsmultiplebirths.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=28704197.ui
	subscription/membership/fee required	De Gruyter	https://www.degruyter.com/document/doi/10.1515/jpm-2017-0032
	free resource	scite Smart Citations	https://scite.ai/reports/28704197