 At admission, a thorough evaluation of all participants was carried out via history taking and physical examination, which included anthropometric measurements. A baseline transvaginal ultrasound examination was done using 7-10 MHZ probe Voluson 730 PRO V, GE Healthcare, USA to measure endometrial thickness and exclude any pelvic pathology before treatment. Basal hormonal assays were performed on day 3 of the spontaneous or progestin induced cycle and included measurement of the serum concentrations of luteinizing hormone LH, follicle-stimulating hormone FSH, and testosterone. 