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subscription/membership/fee required American Psychological Association http://content.apa.org/journals/pag/30/2/475
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=26030776.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26030776/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/26030776
Full text from University of California eScholarship free resource eScholarship, California Digital Library, University of California https://escholarship.org/uc/item/1968v8mh
free resource scite Smart Citations https://scite.ai/reports/26030776