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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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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).