1. Clinical Genetics, St Michael's Hospital BristolUniversity Hospitals Bristol NHS Foundation Trust Bristol UK
2. East Midlands and East of England NHS Genomic Laboratory HubCambridge University Hospitals NHS Foundation Trust Cambridge UK
3. East Anglian Medical Genetics Service, Addenbrooke's HospitalCambridge University Hospitals NHS Foundation Trust Cambridge UK
4. Département of GeneticsINSERM UMR1163, Université Paris Descartes‐Sorbonne Paris Cité, Institut Imagine, AP‐HP, Hôpital Necker Enfants Malades Paris France
5. Department of RadiologyStavanger University Hospital Stavanger Norway
6. Department of Medical GeneticsHaukeland University Hospital Bergen Norway
7. Department of Paediatric Endocrinology and DiabetesBristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust Bristol UK
8. Department of RadiologyGreat Ormond Street Hospital for Children NHS Foundation Trust London UK
9. Wessex Clinical Genetics, Princess Anne Hospital Southampton UK
10. Department of Health RegistriesNorwegian Institute of Public Health Bergen Norway
11. Department of Clinical ScienceUniversity of Bergen Bergen Norway
12. Department of PaediatricsHaukeland University Hospital Bergen Norway
13. Department of Clinical GeneticsLeiden University Medical Centre Leiden the Netherlands
14. Oxford Centre for Genomic MedicineOxford University Hospitals NHS Foundation Trust Oxford UK
15. Department of RadiologyOslo University Hospital Oslo Norway
16. Department of Paediatric OrthopaedicsBristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust Bristol UK
17. University of SheffieldAcademic Unit of Child Health, Sheffield Children's NHS Foundation Trust Sheffield UK
18. Section of Paediatric RadiologyHaukeland University Hospital Bergen Norway
19. Department of Clinical MedicineUniversity of Bergen Bergen Norway
20. Department of Medical GeneticsOslo University Hospital Oslo Norway
21. Department of Medical GeneticsTelemark Hospital Trust Skien Norway
22. Nuffield Orthopaedic Centre Oxford UK