Name	Info	Provider	Link
	free resource	Medknow Publications and Media Pvt Ltd	http://www.jmuonline.org/article.asp?issn=0929-6441;year=2018;volume=26;issue=3;spage=160;epage=162;aulast=Yang
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=30283204.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30283204/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30283204