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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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There are approximately 3 million unintended pregnancies in the United States each year.