Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=17&issue=4&spage=335&aulast=Cabral
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=37364195.ui
	subscription/membership/fee required	Wolters Kluwer	https://journals.lww.com/37364195.pmid