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Did you know?
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.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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There are approximately 3 million unintended pregnancies in the United States each year.