Use of Corifolitropin Alfa in Oocyte Donors

Inclusion Criteria: * Women aged 18-35 years who meet the entry criteria for the IVI Donor Program: * Weight \< 60 Kg * Women with at least 6 antral follicles per ovary * Women who will fit the protocoo during the period of the study * Women who give written consent to participate in the test Exclusion Criteria: * Women with basal antral follicle count above 20 or below 6. * Women with comorbidities, in the judgement of the investigator, that may interfere with the trearment of ovarian stimulation.