1. Assis Chateaubriand Maternity School, Federal University of Ceará (UFC), Council of Europe, Fortaleza, Brazil;
2. Department of Maternal and Child, Federal University of Ceará (UFC), Council of Europe, Fortaleza, Brazil;
3. Department of Obstetrics and Gynecology, University of Fortaleza, Council of Europe, Fortaleza, Brazil;
4. Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil