Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27900110/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/27900110
	free resource	BMJ Publishing Group	https://doi.org/10.1136/bmjsem-2015-000025
	free resource	scite Smart Citations	https://scite.ai/reports/27900110