目的通过观察服药前后咳嗽的变化和肺功能的情况，评价疏风宣肺汤治疗咳嗽变异型哮喘的临床疗效。
Objective To evaluate the clinical medical effect of Shufeng Xuanfei Tang on cough variant asthma by observing the changes of cough and the situation of lung function before and after treatment.
目的通过观察服药前后咳嗽的变化和肺功能的情况，评价疏风宣肺汤治疗咳嗽变异型哮喘的临床疗效。
Objective To evaluate the clinical medical effect of Shufeng Xuanfei Tang on cough variant asthma by observing the changes of cough and the situation of lung function before and after treatment.
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