Affiliation: | 1. Depanments of Medical Genetics and Obstetrics and Gynecology, Vrije Vniversiteit Brussel, Laarbeeklaan 103 E, 1090 Brussels;2. Departments of Obstetrics, Neuropediatrics and Genetics, Universilé Catholique de Louvain, A venue Hippocrate 10, 1200 Brussels, Belgium |