1Department of Medical Genetics, Antwerp University Hospital and University of Antwerp, 2650 Edegem, Belgium
2Laboratory for Skeletal Dysplasia Research, Department of Human Genetics, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
3INSERM U1132 and Université de Paris, Reference Centre for Rare Bone Diseases, Hospital Robert Debré, F-75010 Paris, France
4Center for Human Genetics, University Hospital Leuven, Leuven, Belgium
5Montpellier University and INSERM U1183, Montpellier, France
6Competence Center for Bone Diseases, Clinical Genetics Unit, Montpellier University Hospital, Montpellier, France