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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.