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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.