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Author Question: Polio is an uncommon disease in most developed countries, but it was very common before widespread ... (Read 16 times) |
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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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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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.