Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21607015/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21607015
	free resource	Dove Medical Press	https://dx.doi.org/10.2147/CLEP.S17191
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:21607015