1. Institute of Metabolism and Systems Research College of Medical & Dental Sciences, University of Birmingham, Edgbaston Birmingham UK
2. Fetal Medicine Centre Birmingham Women's and Children's NHS Foundation Trust Birmingham UK
3. Wellcome Sanger Institute Hinxton UK
4. West Midlands Regional Genetics Service Birmingham Women's and Children's NHS Foundation Trust Birmingham UK
5. Department of Medical Genetics University of Cambridge Cambridge UK
6. NIHR Cambridge Biomedical Research Centre Cambridge UK
7. Department of Clinical Genetics Cambridge University Hospitals NHS Foundation Trust Cambridge UK
8. North Thames Genomic Laboratory Hub Great Ormond Street NHS Foundation Trust London UK
9. UCL Great Ormond Street Institute of Child Health London UK
10. Molecular and Clinical Sciences St George's University of London London UK
11. SW Thames Regional Genetics Department St George's University Hospitals NHS Foundation Trust London UK
12. Institute for Genomic Medicine Columbia University Medical Center New York NY USA
13. Division of Maternal–Fetal Medicine, Department of Obstetrics and Gynecology Columbia University Vagelos Medical Center New York NY USA
14. Fetal Medicine Unit and Prenatal Diagnosis Center Shanghai First Maternity and Infant Hospital of Tongji University Shanghai China
15. Center for Maternal–Fetal Precision Medicine, Division of Maternal–Fetal Medicine University of California San Francisco CA USA