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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.