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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Medication errors are three times higher among children and infants than with adults.
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The horizontal fraction bar was introduced by the Arabs.