Name Info Provider Link
Full text from the Univ. of Michigan Library free resource MLibrary (Deep Blue) http://hdl.handle.net/2027.42/86869
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=21320236.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21320236/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/21320236
subscription/membership/fee required Wiley https://doi.org/10.1111/j.1365-2982.2011.01678.x