The inclusion criteria were as below:
- Research type: Randomized controlled trials (RCTs), controlled
clinical trial, prospective/retrospective cohort study or studies that
have at least two arms of comparison;
- An object of study: Patients must have been <=18 years of
age, who diagnosed with CPAM while asymptomatic;
- Intervening measure: Patients received surgical treatment for CPAM in
different operation timing;
- Outcome indicator: The study included at least one of the following
information was reported: complications, length of hospital stay,
pleural drainage/chest tube duration, ventilation outcomes, mortality;
- Written in English only;