Bronchial asthma usually worsens in response to triggering factors: allergens, cold air, exercise or infection. During an attack of bronchial asthma, the lumen of the airways, through which…
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Bronchial asthma usually worsens in response to triggering factors: allergens, cold air, exercise or infection. During an attack of bronchial asthma, the lumen of the airways, through which…