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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

