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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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The horizontal fraction bar was introduced by the Arabs.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.