Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23108514/
	subscription/membership/fee required	Cardiovascular Journal of Africa	https://journals.co.za/doi/10.10520/EJC126407
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23108514