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Vaccines prevent between 2.5 and 4 million deaths every year.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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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.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.