1. Department of Obstetrics and Gynecology University of Cagliari, Policlinico Universitario Duilio Casula Monserrato, Cagliari Italy
2. Department of Obstetrics, Gynecology and Reproduction Hospital Universitari Dexeus Barcelona Spain
3. Unidad Epidemiología y Estadística, Departamento de Obstetricia, Ginecología y Reproducción Hospital Universitario Quirón Dexeus Barcelona Spain
4. Obstetrics and Gynecology Ultrasound Unit at the Chaim Sheba Medical Center Tel‐Hashomer, Israel affiliated to Tel‐Aviv University Israel
5. Department of Surgical Sciences, Obstetrics and Gynecology Unit University of Parma Parma Italy
6. Secció d'Ecografia Servei de Ginecologia i Obstetricia Hospital de la Santa Creu i Sant Pau Barcelona Spain
7. Ob/Gyn Ultrasonic Imaging Unit Sheba Medical Center, Tel‐Hashomer Israel
8. Hellen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva Israel
9. Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
10. Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
11. Department of Radiology Azienda Ospedaliero Universitaria di Cagliari Cagliari Italy
12. Department of Obstetrics and Gynecology, Clínica Universidad de Navarra, School of Medicine University of Navarra Pamplona Spain