Name	Info	Provider	Link
	free resource	HighWire	https://bmjopen.bmj.com/lookup/pmidlookup?view=long&pmid=30206078
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30206078/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30206078
	free resource	scite Smart Citations	https://scite.ai/reports/30206078
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/64064