Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15319627.ui
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/doi/10.1097/00005176-200409000-00008
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/00005176-200409000-00008