Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/B978-0-12-416742-1.00013-5
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24439289/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/24439289
	free resource	scite Smart Citations	https://scite.ai/reports/24439289