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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The human body produces and destroys 15 million blood cells every second.