1. Department of Genetic Medicine and Development Faculty of Medicine University of Geneva Geneva Switzerland
2. CHU Clermont‐Ferrand Service d'hématologie biologique Clermont‐Ferrand France
3. Medical Genetics Service University Hospitals of Geneva Geneva Switzerland
4. CHU Clermont‐Ferrand Service de cytogénétique médicale Clermont‐Ferrand France
5. CHU Clermont‐Ferrand Service de génétique médicale Clermont‐Ferrand France
6. CHU Clermont‐Ferrand Service de pédiatrie Clermont‐Ferrand France
7. Division of Angiology and Haemostasis University Hospitals of Geneva Geneva Switzerland