Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=10212409.ui
	free resource	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=1364-5072&date=1999&volume=86&issue=4&spage=642
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:10212409
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/jambio/article-lookup/doi/10.1046/j.1365-2672.1999.00707.x