To study the effect and mechanism of Shuanghua aerosol (SHA) in treating infantile upper respiratory tract infection (IURTI).
目的：观察双花喷雾剂治疗小儿上呼吸道感染的疗效，探讨其作用机理。
To study the effect and mechanism of Shuanghua aerosol (SHA) in treating infantile upper respiratory tract infection (IURTI).
目的：观察双花喷雾剂治疗小儿上呼吸道感染的疗效，探讨其作用机理。
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