1Center for Human Genetics, Cliniques universitaires Saint-Luc, University of Louvain, VASCERN VASCA European Reference Centre, Brussels, Belgium
2Department of Pathology, Radboud University Medical Center, VASCERN VASCA European Reference Centre, PO Box 9101, Nijmegen, 6500 HB the Netherlands
3Normandie Univ, UNICAEN, Service de Génétique, CHU Caen Normandie, VASCERN VASCA European Reference Centre, Caen, BIOTARGEN EA 7450, 14000 France
4HUS Diagnostic Center, Laboratory of Genetics, University of Helsinki and Helsinki University Hospital, VASCERN VASCA European Reference Centre, Helsinki, Finland
5Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, CIBER‑ER (Biomedical Network Research Center for Rare Diseases), Instituto de Salud Carlos III (ISCIII), Madrid, and Genomic Unit, Molecular and Genetic Medicine Section, Hospital Sant Joan de Déu, VASCERN VASCA European Reference Centre, Barcelona, Spain
6Department of Dermatology, Hospital Sant Joan de Deu, VASCERN VASCA European Reference Centre, Barcelona, Spain
7Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital and Research Institute, IRCCS, VASCERN VASCA European Reference Centre, Rome, Italy
8Medical Genetics Unit, Bambino Gesù Children’s Hospital, IRCCS, VASCERN VASCA European Reference Centre, Rome, 00165 Italy
9Sorbonne Université, Département de Génétique, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié- Salpêtrière, VASCERN VASCA European Reference Centre, Paris, France
10Department of Molecular Medicine and Surgery, Karolinska Institutet, Department of Clinical Genetics, Karolinska University Hospital, VASCERN VASCA European Reference Centre, Stockholm, Sweden
11Department of Genetics, Center of Diagnostics, Copenhagen University Hospital - Rigshospitalet, VASCERN VASCA European Reference Centre, Copenhagen, Denmark
12Laboratory of Molecular Oncology, Pediatric Cancer Center Barcelona, Hospital Sant Joan de Déu, VASCERN VASCA European Reference Centre, Barcelona, Spain
13Department of Clinical Genetics, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, VASCERN VASCA European Reference Centre, Helsinki, Finland
14Department of Medical Genetics, Oslo University Hospital, VASCERN VASCA European Reference Centre, Oslo, Norway
15Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital and Research Institute, IRCCS, VASCERN VASCA European Reference Centre, Rome, Italy
16Institute of Human Genetics, University Hospital Otto-Von-Guericke-University, Magdeburg, Germany
17Center for Vascular Anomalies, Cliniques Universitaires Saint-Luc, Brussels, Belgium
18Human Molecular Genetics, de Duve Institute, University of Louvain, VASCERN VASCA European Reference Centre, Brussels, Belgium
19WELBIO Department, WEL Research Institute, Avenue Pasteur, 6, Wavre, 1300 Belgium