1 Haemostasis and Thrombosis Unit, Division of Adult Haematology, Cliniques Universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium.
2 Division of Pediatric Haematology and Oncology, Cliniques universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium.