Name	Info	Provider	Link
	free resource	Medknow Publications and Media Pvt Ltd	http://www.ijaweb.org/article.asp?issn=0019-5049;year=2019;volume=63;issue=11;spage=932;epage=937;aulast=Ponde
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31772402.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31772402/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31772402