Name	Info	Provider	Link
Varicose Veins	free resource	MedlinePlus Health Information	https://medlineplus.gov/varicoseveins.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=16918565.ui
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=1076-0512&date=2006&volume=32&issue=8&spage=1031
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:16918565
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1111/j.1524-4725.2006.32226.x