1. Department of Clinical Genetics; Sheffield Children's Hospital; Northern General Hospital; Sheffield UK
2. Division of Cancer and Genetics; School of Medicine; Cardiff University; Cardiff UK
3. University of London and St George's University Hospitals NHS Foundation Trust; Institute of Molecular and Clinical Sciences; London UK
4. Department of Clinical Genetics; Maastricht Universitair Medisch Centrum; Maastricht The Netherlands
5. Liverpool Women's Hospital NHS Foundation Trust; Liverpool UK
6. Department Clinical Genetics; University Hospital of Southampton; Oxford Eye Hospital; Oxford UK
7. University of London and St. George's Hospital; Institute of Molecular and Clinical Sciences; London UK
8. Manchester Centre for Genomic Medicine; St Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust; Manchester Academic Health Sciences Center; Manchester UK
9. School of Medicine; Medical Sciences and Nutrition; University of Aberdeen; Aberdeen UK
10. Centre for Cancer Research and Cell Biology; Queens University Belfast; Belfast UK
11. Department of Clinical Genetics; Yorkshire Regional Genetics Service; Chapel Allerton Hospital; Leeds UK
12. West midlands Regional Clinical genetics service and Birmingham Health Partners Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
13. School of Health and Related Research; University of Sheffield; Sheffield UK
14. Department of Clinical Genetics; Leids Universitair Medisch Centrum; Leiden The Netherlands
15. Radboud University Medical Center; Nijmegen The Netherlands
16. Department of Genetics; Universitair Medical Centre Groningen; University of Groningen; Groningen The Netherlands