Ethics Approval

All of the procedures in this study are part of routine care in the assisted reproductive center. All patients who underwent assisted reproductive treatment signed a written informed consent agreeing with the procedures related to the treatment, as stablished by the Brazilian Federal Medicine Council (Conselho Federal de Medicina ). In addition, patients consented to their data to be used for scientific publication purposes, provided anonymity was respected. Therefore, the study was exempt from approval by the Institutional Review Board.