1. Department of Gynecology and Obstetrics Division of Maternal‐Fetal Medicine Johns Hopkins School of Medicine Baltimore Maryland USA
2. Department of Obstetrics and Gynecology Christiana Care Medical Center Newark Delaware USA
3. Department of Obstetrics and Gynecology Division of Maternal – Fetal Medicine The University of North Carolina School of Medicine Chapel Hill North Carolina USA
4. Department of Obstetrics and Gynecology Columbia University Irving Medical Center New York New York USA
5. Institute of Medical Genetics and Applied Genomics University of Tübingen Tübingen Germany
6. Division of Human Genetics Cincinnati Children's Hospital Center Cincinnati Ohio USA
7. Department of Obstetrics and Gynecology Vanderbilt University Medical Center Nashville Tennessee USA
8. Department of Surgery University of California San Francisco California USA
9. Department of Obstetrics and Gynecology Baylor College of Medicine Houston Texas USA
10. St George's University of London Molecular and Clinical Sciences Research Institute London UK
11. The Prenatal Diagnosis and Medical Genetics Program Department of Obstetrics and Gynecology Mount Sinai Hospital University of Toronto Toronto ON Canada
12. Department of Obstetrics, Gynecology, and Reproductive Sciences University of California San Francisco California USA
13. Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA