Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcoralhealth.biomedcentral.com/articles/10.1186/s12903-021-01566-4
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33892689/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/33892689
Full text from	free resource	Diposit Digital de la Universitat de Barcelona	http://hdl.handle.net/2445/177268