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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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The horizontal fraction bar was introduced by the Arabs.
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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.