1. Department of Obstetrics and GynecologyAarhus University Hospital Aarhus Denmark
2. Department of Obstetrics and GynecologyUniversity Hospital Leuven Leuven Belgium
3. Department of Biomedicine and PreventionObstetrics and Gynecology Clinic, Università Degli Studi di Roma Tor Vergata Rome Italy
4. Division of Gynecologic and Prenatal Ultrasound, Department of Obstetrics and GynecologyUniversity of Basel Basel Switzerland
5. Departments of Radiology and Obstetrics and GynecologyBrigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA
6. Department of Development and RegenerationKatholieke Universiteit Leuven Leuven Belgium
7. Queen Charlotte's and Chelsea Hospital, Imperial College London England
8. Erasmus University Hospital Brussels Belgium
9. Department of Clinical Science and Education, Södersjukhuset, and Department of Women's and Children's HealthKarolinska Institutet Stockholm Sweden
10. Department of Obstetrics and Gynecology, DSC L. Sacco Milan Italy
11. Department of Obstetrics and GynecologySkaane University Hospital Malmo Sweden
12. Department of Obstetrics GynecologySant'Orsola Malpighi Hospital Bologna Italy