2.4. Data Abstraction
The data were prepared in a standardized manner. We recorded the demographics and study information of patients, including author, evidence level(EL), population age range, gender, and study type. In addition, lesions, laser setting, clinical outcomes, results, and findings are based on the reference standard. Complications, recurrence, remission, clearance, cure rate, and relative data (when given) were also abstracted. The primary outcome was the cure rate. Secondary outcomes were the recurrent rate, death rate, remission rate, clearance rate, effective rate, and HPV-detected rate. The postoperative complication rate was the safety outcome measure.