Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30109348/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30109348
	free resource	scite Smart Citations	https://scite.ai/reports/30109348
	free resource	Singapore Medical Association	https://doi.org/10.11622/smedj.2018085