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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).