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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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There are more nerve cells in one human brain than there are stars in the Milky Way.