1. Department of Maternal and Child Health and Urological Sciences Sapienza University of Rome Rome Italy
2. Center for Fetal Care and High‐Risk Pregnancy, Department of Obstetrics and Gynecology University of Chieti Chieti Italy
3. Department of Obstetrics and Gynecology, Fondazione Policlinico Tor Vergata University of Rome Tor Vergata Rome Italy
4. Obstetric Unit IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
5. Fetal Medicine Unit St George's University Hospitals NHS Foundation Trust, University of London London UK
6. Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute St George's University of London London UK
7. Fetal Medicine Unit, Liverpool Women's Hospital University of Liverpool Liverpool UK
8. Nuffield Department of Women's and Reproductive Health University of Oxford Oxford UK
9. Oxford Maternal and Perinatal Health Institute, Green Templeton College University of Oxford Oxford UK