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.