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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.