Name	Info	Provider	Link
	free resource	Medknow Publications and Media Pvt Ltd	http://www.ijem.in/article.asp?issn=2230-8210;year=2015;volume=19;issue=2;spage=292;epage=295;aulast=Varming
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=25729695.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25729695/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/25729695
	free resource	scite Smart Citations	https://scite.ai/reports/25729695