目的：探讨晚发支气管哮喘与老年COPD患者气道反应性等呼吸功能特点。
Objective: To detect the characterization of Bronchial Reactivity and other pulmonary functions in elderly patients with late asthma and COPD.
目的：探讨晚发支气管哮喘与老年COPD患者气道反应性等呼吸功能特点。
Objective: To detect the characterization of Bronchial Reactivity and other pulmonary functions in elderly patients with late asthma and COPD.
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