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There are approximately 3 million unintended pregnancies in the United States each year.
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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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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.