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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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The horizontal fraction bar was introduced by the Arabs.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.