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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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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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If you could remove all of your skin, it would weigh up to 5 pounds.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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The horizontal fraction bar was introduced by the Arabs.