1. American Heart Association. Diseases and Conditions. Peripheral artery disease. Available at: http://www.americanheart.org/presenter.jhtml?identifier=3020242. Accessed December 5 2004.
2. Vascular Disease Foundation. Information for patients and health care providers on all aspects of vascular disease with particular emphasis on PAD. Available at: http://www.vdf.org. Accessed December 5 2004.
3. National Institutes of Health. National Heart Lung and Blood Institute. Information for patients on cardiovascular diseases high blood pressure and high cholesterol. Available at: http://www.nhlbi.nih.gov/health/public/heart/index.htm. Accessed December 5 2004.