Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=16948875.ui
	subscription/membership/fee required	Cambridge University Press	https://www.cambridge.org/core/product/identifier/S0031182006001132/type/journal_article