1. Population Health Sciences Institute, Faculty of Medical Sciences Newcastle University Newcastle upon Tyne UK
2. Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust University of London London UK
3. Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute St George's University of London London UK
4. Department of Obstetrics and Fetomaternal Medicine Medical University of Vienna Vienna Austria
5. Department of Fetal Medicine Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
6. Biosciences Institute, Faculty of Medical Sciences Newcastle University Newcastle upon Tyne UK