Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=17910600.ui
	subscription/membership/fee required	Wiley	https://doi.org/10.1111/j.1600-079X.2007.00480.x