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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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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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Medication errors are more common among seriously ill patients than with those with minor conditions.