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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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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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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.