Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18284442.ui
	subscription/membership/fee required	Wiley	https://doi.org/10.1111/j.1742-1241.2008.01706.x