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Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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People about to have surgery must tell their health care providers about all supplements they take.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.