1. Department of Obstetrics and Gynecology; Fortaleza University (UNIFOR); Fortaleza Brazil
2. Department of Obstetrics and Gynecology; Federal University of Bahia (UFBA); Salvador Brazil
3. Mario Palmério University Hospital; University of Uberaba (UNIUBE); Uberaba Brazil
4. Department of Obstetrics, Paulista School of Medicine; Federal University of São Paulo (EPM-UNIFESP); São Paulo Brazil
5. Department of Obstetrics and Gynecology; Campinas University (UNICAMP); Campinas Brazil