这个词是什么意思？
A subcategory of CHRONIC OBSTRUCTIVE PULMONARY DISEASE. The disease is characterized by hypersecretion of mucus accompanied by a chronic (more than 3 months in 2 consecutive years) productive cough. Infectious agents are a major cause of chronic bronchitis.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D029481 · MeSH 2026。
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