Name	Info	Provider	Link
	free resource	HighWire	http://www.annfammed.org/cgi/pmidlookup?view=long&pmid=21747103
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21747103/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21747103
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy?issn=1544-1709&vol=9&issue=4&pgfirst=323