3 Department of Obstetrics and Gynecology, Federal University of Bahia (UFBA), Salvador, BA 40026-010, Brazil.
4 Harris Birthright Research Center for Fetal Medicine, King's College Hospital and Department of Fetal Medicine, University College, London SE5 9RS, UK.
5 Department of Obstetrics and Gynecology, Campinas University (UNICAMP), Campinas, SP 13083-887, Brazil.