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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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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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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.