Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32364356/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32364356
	free resource	Korean Association of Oral and Maxillofacial Surgeons	http://www.jkaoms.org/journal/view.html?volume=46&number=2&page=155