What Is Chronic Bronchitis?
if you cough up mucus for at least 3 months each year, 2 or more years in a row, without another ... cilia then sweep the mucus up the airways to the throat, where it is swallowed or coughed up, again to ... Pulmonology;COPD;What Is Chronic Bronchitis;pulmonary disease;chronic bronchitis;pm1002a;82429;social determinants of health;SDOH