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There are approximately 3 million unintended pregnancies in the United States each year.
There are more nerve cells in one human brain than there are stars in the Milky Way.
The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.
There are 20 feet of blood vessels in each square inch of human skin.
The horizontal fraction bar was introduced by the Arabs.
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