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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 longest a person has survived after a heart transplant is 24 years.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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The horizontal fraction bar was introduced by the Arabs.