Name	Info	Provider	Link
Clinical Trials	free resource	MedlinePlus Health Information	https://medlineplus.gov/clinicaltrials.html
	subscription/membership/fee required	Nature Publishing Group	https://doi.org/10.1038/bjc.2015.301
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26313666/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26313666
	free resource	scite Smart Citations	https://scite.ai/reports/26313666
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/53746