For all patients, full history was taken followed by complete physical examination (with emphasis on speculum examination to exclude cervical or vaginal wall lesions) & laboratory investigations (FSH, coagulation profile & routine preoperative investigations). History of Pap smear schedule was obtained and a Pap smear was scheduled if it was due. Transvaginal ultrasound (TVUS) was done using a 7.5 MHz vaginal probe of the General Electric Voluson E8 ultrasound unit (GE Healthcare Austria GmbH, Seoul, Korea) to assess uterine size and to exclude organic lesions of the uterus or ovaries. All participants were subjected to an endometrial biopsy (either before the procedure or intraoperatively followed by a frozen section). Patients, who were found to have atypical endometrial hyperplasia or endometrial malignancy, were excluded from the study.