Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23505618/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23505618
	free resource	Inforang	https://www.e-kjo.org/journal/view.html?doi=10.4041/kjod.2013.43.1.1
	free resource	scite Smart Citations	https://scite.ai/reports/23505618