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bronchitis

Bronchitis refers to chronic nonspecific inflammation of trachea, bronchial mucosa and its surrounding tissues. Clinically, it is characterized by long-term cough, expectoration or wheezing and repeated hair. Chronic cough, expectoration or accompanied by wheezing, attacks continue for 3 months every year, 2 consecutive years or to 1, and can exclude heart, lung other diseases and repeated attacks, part...



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