1. Department of Obstetrics and GynecologyUniversity of Chieti Chieti Italy
2. Department of Gynecology and ObstetricsGoethe University Frankfurt Germany
3. Fetal Medicine UnitSt George's University Hospitals NHS Foundation Trust, University of London London UK
4. Vascular Biology Research Centre, Molecular and Clinical Sciences Research InstituteSt George's University of London London UK
5. Division of Maternal and Fetal Medicine, Ospedale Cristo ReUniversity of Rome Tor Vergata Rome Italy
6. Department of Obstetrics and GynecologyI.M. Sechenov First Moscow State Medical University Moscow Russia
7. Section of Perinatal Pathology, Department of PathologyKarolinska University Hospital Huddinge Stockholm Sweden
8. Division of Pathology, Department of Laboratory MedicineKarolinska Institutet Stockholm Sweden
9. Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and TechnologyKarolinska Institutet Stockholm Sweden
10. Center for Fetal MedicineKarolinska University Hospital Stockholm Sweden
11. Women's Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT – The Arctic University of Norway Tromsø Norway
12. Department of Obstetrics and GynecologyUniversity Hospital of Northern Norway Tromsø Norway