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吸烟是导致COPD最重要的诱因,对于吸烟合并COPD的气道结构变化和细胞学特点的探讨,有利于认识和治疗COPD。
Smoking is the most important cause leading to COPD. The study on the changes of airway structure and cytology in smoking combined with COPD is helpful to recognize and treat COPD.