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The average office desk has 400 times more bacteria on it than a toilet.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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There are approximately 3 million unintended pregnancies in the United States each year.