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Did you know?
The horizontal fraction bar was introduced by the Arabs.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

