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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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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.