Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0006-291X(14)02108-1
Cholesterol Levels: What You Need to Know	free resource	MedlinePlus Health Information	https://medlineplus.gov/cholesterollevelswhatyouneedtoknow.html