Name	Info	Provider	Link
	subscription/membership/fee required	Nature Publishing Group	https://doi.org/10.1038/sj.bjc.6690052
Free full Text at ORBi	free resource	ORBi (University of Liege)	https://hdl.handle.net/2268/16993
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/9888476/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/9888476