锌硒宝联合匹多莫德治疗小儿反复呼吸道感染疗效观察
자서보연합필다막덕치료소인반복호흡도감염료효관찰
Observation of Curative effect of Treasured Zinc and Selenium Combined with Pi do Maude in Treatment of Children with Recurrent Respiratory Tract Infection