Name	Info	Provider	Link
	subscription/membership/fee required	HighWire	http://cshperspectives.cshlp.org/cgi/pmidlookup?view=long&pmid=21690215
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21690215/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21690215
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:21690215