The aim of this study is to investigate the incidence of infection among mild symptomatic PSP group and asymptomatic PSP group after surgical procedure .
We collected the induced sputum from enrolled 1629 children <*> with no respiratory symptom prior to pediatric surgery between March 2017 and February 2019 .
The aim of this study is to investigate the incidence of infection among mild symptomatic PSP group and asymptomatic PSP group after surgical procedure .
We collected the induced sputum from enrolled 1629 children ( under 18 years of age ) with no respiratory symptom prior to pediatric surgery between March 2017 and February 2019 .