1 Department of Obstetrics and Gynecology, State University of Campinas (UNICAMP), Rua Alexander Fleming 101, Cidade Universitária, Campinas, SP, 13083-881, Brazil.
2 Centro de Referência em Saúde da Mulher (Mater-RP), Ribeirão Preto, Brazil.
3 Department of Obstetrics and Gynecology, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
4 Department of Obstetrics and Gynecology, State University of Campinas (UNICAMP), Rua Alexander Fleming 101, Cidade Universitária, Campinas, SP, 13083-881, Brazil. [email protected].