1. Department of Fetal Medicine, Clínica de Diagnóstico por Imagem, Rio de Janeiro, RJ, Brazil
2. Department of Radiology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
3. Prenatal Diagnostic Service, Department of Obstetrics and Gynecology, AUSL Reggio Emilia, Italy
4. Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
5. Medical Course, Universidade Municipal de São Caetano do Sul, São Caetano do Sul, SP, Brazil