Name Info Provider Link
Cholesterol Levels: What You Need to Know free resource MedlinePlus Health Information https://medlineplus.gov/cholesterollevelswhatyouneedtoknow.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15670160.ui
free resource Wiley https://onlinelibrary.wiley.com/doi/10.1111/j.1742-4658.2004.04517.x