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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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Approximately 25% of all reported medication errors result from some kind of name confusion.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.