1. Department of Gynecology, Sugisawa Medical Center, Curitiba, PR, Brazil
2. Department of Gynecology, Vita Batel Hospital, Curitiba, PR, Brazil
3. Department of Radiology, Fetalmed, Curitiba, PR, Brazil
4. Department of Gynecology, Nossa Senhora de Fátima Maternity Hospital, Curitiba, PR, Brazil
5. Department of Radiology, Roentgen Diagnóstico Institute, Curitiba, PR, Brazil