Name	Info	Provider	Link
	free resource	Medknow Publications and Media Pvt Ltd	http://www.joacp.org/article.asp?issn=0970-9185;year=2019;volume=35;issue=1;spage=109;epage=113;aulast=Wahdan
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31057251.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31057251/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31057251