1. Department Of Obstetrics And Gynecology, Prenatal Diagnostic Service, Guastalla Civil Hospital, Ausl Reggio Emilia, Italy
2. Department Of Obstetrics And Gynecology, Prenatal Diagnostic Service, “Carlo Poma” Hospital, Mantua, Italy
3. Department Of Obstetrics And Gynecology, Preconceptional And Prenatal Medicine, Irccs Gabbliera Hospital, Genoa, Italy
4. Monash Ultrasound For Women, Melbourne, Victoria, Australia
5. Monash Ultrasound For Women, Melbourne, Victoria, Australia; Department Of Perinatal Medicine, Royal Women’S Hospital And Department Of Obstetrics And Gynaecology, University Of Melbourne, Melbourne, Australia
6. Department Of Obstetrics, Federal University Of São Paulo And Paulista School Of Medicine, São Paulo, Brazil