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Tag Archives: Asthma

Asthma is a most common respiratory chronic disease and involves 24 million persons in the United States. It is a chronic obstructive pulmonary disease (COPD). Asthma is characterized by narrowing of bronchial airways, reversible expiratory airflow obstruction, and spasm of the respiratory tract. Asthma can severely affect a person’s quality of life and physical activity. […]