The American College of Cardiology (ACC) is a nonprofit medical society dedicated to promoting cardiovascular health and prevention of heart disease. CardioSmart, offered by the ACC, is an educational website for patients with heart disease. To learn more about your diagnosis, go to www.cardiosmart.org.

The American Heart Association is a national voluntary health agency committed to help reduce disability and death from cardiovascular diseases and stroke. The AHA's patient education website, "Heart Hub," includes information for both patients and their caregivers. To learn more, go to www.americanheart.org/hearthub/index.htm.