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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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There are 60,000 miles of blood vessels in every adult human.