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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The horizontal fraction bar was introduced by the Arabs.
There are approximately 3 million unintended pregnancies in the United States each year.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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