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People about to have surgery must tell their health care providers about all supplements they take.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The longest a person has survived after a heart transplant is 24 years.