1. Medical Resident in Obstetrics and Gynecology, Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Pernambuco, Brazil
2. Department of Obstetrics and Gynecology, Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Pernambuco, Brazil
3. Department of Maternal and Child Healthcare, Federal University of Pernambuco, Recife, Pernambuco, Brazil
4. Department of Obstetrics, Barão de Lucena Hospital, Recife, Pernambuco, Brazil
5. Department of Obstetrics, Arnaldo Marques Polyclinic and Maternity Hospital, Recife, Pernambuco, Brazil
6. Department of Maternal and Child Healthcare, Federal University of Ceará, Fortaleza, Ceará, Brazil
7. Department of Maternal and Child Healthcare, Federal University of Campina Grande, Campina Grande, Paraíba, Brazil