1. Department of Obstetrics and Gynecology, State University of Rio de Janeiro, Rio de Janeiro, Brazil

2. Department of Radiology, Clínica de Diagnóstico por Imagem, Rio de Janeiro, Brazil

3. Department of Obstetrics and Gynecology, Guastalla Civil Hospital, Reggio Emilia, Italy

4. Mário Palmério University Hospital, University of Uberaba, Uberaba, Brazil

5. Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil