1. Department of Community Health, Federal University of Ceará, Fortaleza, Brazil

2. Department of Maternal and Child Health, Federal University of Ceará, Fortaleza, Brazil

3. Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil

4. Medical course, Municipal University of São Caetano do Sul, São Paulo, Brazil