1. Genetics and Genomic Medicine UCL Great Ormond Street Institute of Child Health London UK
2. NHS North Thames Genomic Laboratory Hub, Great Ormond Street Hospital for Children NHS Foundation Trust London UK
3. Wellcome Sanger Institute Hinxton UK
4. NHS Central and South Genomic Laboratory Hub Birmingham Women's and Children's NHS Foundation Trust Birmingham UK
5. Fetal Medicine Centre Birmingham Women's and Children's NHS Foundation Trust Birmingham UK
6. Institute of Metabolism and Systems Research, College of Medical Sciences University of Birmingham Birmingham UK
7. Department of Medical Genetics University of Cambridge Cambridge UK
8. Department of Clinical Genetics Cambridge University Hospitals NHS Foundation Trust Cambridge UK
9. Department of OBGYN Columbia University Irving Medical Center New York NY USA
10. Department of Pathology and Cell Biology Vagelos College of Physicians and Surgeons New York NY USA
11. Institute for Genomic Medicine Vagelos College of Physicians and Surgeons New York NY USA