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Did you know?
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
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There are 20 feet of blood vessels in each square inch of human skin.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.