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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
There are approximately 3 million unintended pregnancies in the United States each year.
It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.