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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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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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There are 60,000 miles of blood vessels in every adult human.
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For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.