Name Info Provider Link
subscription/membership/fee required S. Karger AG, Basel, Switzerland https://doi.org/10.1159/000442979
Older Adult Health free resource MedlinePlus Health Information https://medlineplus.gov/olderadulthealth.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=26799837.ui