Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S2210-9099(11)00005-1
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24159447/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/24159447
	free resource	Korea Disease Control and Prevention Agency	https://doi.org/10.1016/j.phrp.2011.04.004