Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=10512376.ui
	subscription/membership/fee required	Silverchair Information Systems	https://diabetesjournals.org/diabetes/article-lookup/doi/10.2337/diabetes.48.10.2074