Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0020729203005216
Vaginal Bleeding	free resource	MedlinePlus Health Information	https://medlineplus.gov/vaginalbleeding.html
	subscription/membership/fee required	Wiley	https://doi.org/10.1016/j.ijgo.2003.12.001