1. Faculty of Medicine, Department of Obstetrics and Gynecology, Ankara University, Ankara, Turkey
2. Department of Statistics, Middle East Technical University, Ankara, Turkey
3. Hakkari State Hospital, Hakkari, Turkey
4. Fetal Medicine Unit, St. George’s Hospital, St. George’s University of London, London, UK
5. Institute for Women’s Health, University College London, London, UK
6. Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St. George’s University of London, London, UK