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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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People about to have surgery must tell their health care providers about all supplements they take.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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The horizontal fraction bar was introduced by the Arabs.