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Vaccines prevent between 2.5 and 4 million deaths every year.
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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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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.