Venography. Heart Heathy Women website. Available at:
http://www.hearthealthywomen.org/tests-diagnosis/peripheral-vascular-disease/venography.html. Accessed May 20, 2013.
Venography (venogram). Radiologic Society of North America Radiology Info website. Available at:
http://www.radiologyinfo.org/en/info.cfm?pg=venography. Updated August 31, 2013. Accessed May 20. 2013.
National Heart, Lung, and Blood Institute
Society of Interventional Radiology
Canadian Cardiovascular Society