Comparison of Hemostatic Agent to Suture in Terms of Hemostatic Function and Preservation of Ovarian Function

Inclusion Criteria: * Informed consent. * Age: 19-45 year-old women * American Society of Anesthesiologists Physical Status classification 1 or 2 * Plan of laparoscopic ovarian cystectomy for unilateral or bilateral ovarian endometriosis diagnosed by ultrasonography * Regular menstruation every 21-45 days Exclusion Criteria: * No 'ovarian' endometriosis * Suspicious disease of ovarian malignancy * Age: 18 and younger, 46 and older * Pregnancy or breastfeeding. * Lower than 0.05 ng/ml of serum Anti-mullerian hormone level * Hormonal therapy within recent 3 months * Considered as inappropriate by the researcher's judgment.