Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23804426/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23804426
	free resource	scite Smart Citations	https://scite.ai/reports/23804426
	subscription/membership/fee required	Silverchair Information Systems	https://aacrjournals.org/clincancerres/article-lookup/doi/10.1158/1078-0432.CCR-12-2169