1. Department of Molecular Medicine and Surgery and Center for Molecular Medicine Karolinska Institutet Stockholm Sweden
2. Department of Molecular Medicine, Biochemistry Unit University of Pavia Pavia Italy
3. Children's Hospital, Pediatric Research Center University of Helsinki and Helsinki University Hospital Helsinki Finland
4. Department of Clinical Genetics INSERM UMR 1163, Paris Descartes‐Sorbonne Paris Cité University, Imagine Institute, Necker Enfans Malades Hospital (AP‐HP) Paris France
5. Division of Pathology, Department of Laboratory Medicine Karolinska Institutet Huddinge Sweden
6. Department of Orthopaedic Surgery Busan Paik Hospital, Inje University College of Medicine Busan South Korea
7. Department of Orthopaedic Surgery Pusan National University Yangsan Hospital, Pusan National University School of Medicine Yangsan Republic of Korea
8. Department of Pediatrics Busan Paik Hospital, College of Medicine, Inje University Busan Republic of Korea
9. Cambridge Institute for Medical Research, Keith Peters Building Cambridge UK
10. Department of Haematology University of Cambridge Cambridge UK
11. Wellcome Trust–Medical Research Council Stem Cell Institute, University of Cambridge Cambridge UK
12. Centre de Génétique Humaine – CGH Cliniques Universitaires St. Luc, UCL Bruxelles Belgium
13. Center for Intractable Diseases Saitama Medical University Hospital Saitama Japan
14. Department of Radiology, I‐Bone Hospital Cheonan Republic of Korea
15. Division of Pediatric Orthopaedics, Seoul National University Children's Hospital Seoul Republic of Korea
16. Department of Clinical Genetics Karolinska University Hospital Stockholm Sweden
17. Folkhälsan Institute of Genetics, and Research Program for Clinical and Molecular Metabolism, University of Helsinki Helsinki Finland