他患了慢性咳嗽。
Objective To study the cause of the chronic cough.
目的：探讨慢性咳嗽的病因。
Chronic cough is a common respiratory symptom in children.
慢性咳嗽是儿童呼吸系统常见的症状。
Nasal disease was an important risk factor to chronic cough.
鼻部疾病是慢性咳嗽重要的危险因素。
Objective: To investigate the cause of chronic cough in children.
目的：探讨小儿慢性咳嗽的病因。
Research cause chronic cough etiology and treatment the status quo.
目的：研究引发慢性咳嗽病因及诊疗现状。
Objective To study the etiology of pertinacious chronic cough in children.
目的探讨小儿难治性慢性咳嗽的病因。
Objective To investigate the cause and specific treatment of chronic cough.
目的探讨慢性咳嗽病因及特异性治疗方法。
After other symptoms have also begun to show, chronic dry cough, fatigue.
之后其他发病症状也开始呈现出来，慢性干咳、疲劳。
After other symptoms have also begun to show, chronic dry cough, fatigue.
之后其他发病症状也开始呈现出来，慢性干咳、疲劳。
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