Name Info Provider Link
Skin Aging free resource MedlinePlus Health Information https://medlineplus.gov/skinaging.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18093013.ui
subscription/membership/fee required Wiley https://doi.org/10.1111/j.1529-8019.2007.00155.x