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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Medication errors are three times higher among children and infants than with adults.
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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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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.