1. Department of Obstetrics and Gynecology, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research Hospital University of Health Sciences Istanbul Turkey
2. Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust University of London London UK
3. Royal College of Obstetricians and Gynaecologists London UK
4. University College London Hospitals, Institute For Women's Health London UK
5. Institute of Women and Children's Health, School of Life Course and Population Sciences King's College London London UK
6. Department of Anesthesiology and Reanimation, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research Hospital University of Health Sciences Istanbul Turkey
7. Department of Obstetrics and Gynecology, School of Medicine Koc University Istanbul Turkey
8. Department of Statistics, Faculty of Arts and Sciences Middle East Technical University Ankara Turkey
9. Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute St George's University of London London UK