Name	Info	Provider	Link
	free resource	BioMed Central	https://joppp.biomedcentral.com/articles/10.1186/s40545-019-0183-0
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31391943/
	free resource	Taylor & Francis	https://www.tandfonline.com/doi/full/10.1186/s40545-019-0183-0
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31391943