Although laryngomalacia is the leading cause of stridor in infancy, vocal cord paralysis, despite its low incidence, is still the second most common cause.

摘要喘鸣是一岁以下婴幼儿呼吸窘迫常见主，头软化症是最常见原因。

This paper studies the results and pharmacologic effects of the liquid extracted from Elephantopus scaber L. in curing three major symptoms of bronchitis (cough, sputum and stridor).

用动物实验方法,地胆根乙醇提取液治疗支气管炎,咳、痰、喘三种症状效果及其药理作用。