1. Hurst W. The Heart, Arteries, and Veins, 10th ed. New York: McGraw-Hill, 2002.
2. CDC/NCHS. National Health and Nutrition Examination Survey III (NHANES III), 1988–1994.
3. American Heart Association. Annual Report. 1996.
4. American Heart Association. Heart Disease and Stroke Statistics – 2004 update.
5. Health Resources Utilization Branch, CDC/NCHS. National Hospital Discharge Survey.