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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.