1. Department of Maternal and Child Health, School of Medicine; Federal University of Ceará (UFC); Fortaleza CE Brazil
2. Mário Palmério University Hospital-University of Uberaba (UNIUBE); Uberaba MG Brazil
3. Department of Obstetrics; Paulista School of Medicine-Federal University of São Paulo (EPM-UNIFESP); São Paulo SP Brazil
4. Department of Obstetrics and Gynecology, Prenatal Diagnostic Center; Guastalla Civil Hospital; Reggio Emilia Italy