1. Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine King's College London London UK
2. Department of Obstetrics and Gynaecology University of Campinas (UNICAMP), School of Medical Sciences São Paulo Brazil
3. Centre for Pragmatic Global Health Trials Institute for Global Health, University College London London UK
4. Faculty of Health, Social Care and Education Kingston and St George's University London UK
5. The Guy's & St Thomas' Charity London UK
6. Caring Futures Institute College of Nursing and Health Sciences, Flinders University Adelaide Australia
7. Department of Surgery and Cancer Imperial College London London UK
8. West Middlesex University Hospital, Chelsea & Westminster Hospital NHS Foundation Trust London UK
9. UCL Institute for Women's Health University College London London UK
10. Fetal Medicine Unit St George's University Hospitals NHS Foundation Trust London UK
11. Molecular & Clinical Sciences Research Institute St George's, University of London London UK
12. Population Health Science Bristol Medical School, University of Bristol Bristol UK
13. Bristol NIHR Biomedical Research Centre Bristol UK
14. Reproduction and Perinatal Centre, Faculty of Medicine and Health University of Sydney Sydney Australia
15. Department of Health Service and Population Research David Goldberg Centre, King's College London London UK