Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0140-6736(84)91225-X
Cholesterol Levels: What You Need to Know	free resource	MedlinePlus Health Information	https://medlineplus.gov/cholesterollevelswhatyouneedtoknow.html