Name Info Provider Link
subscription/membership/fee required American Psychological Association http://content.apa.org/journals/hea/19/5/411
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=11007149.ui