1. Fetal Medicine Unit, Department of Obstetrics and Gynecology; University Hospitals Leuven; Brussels Belgium
2. Cluster Organ Systems, Department of Development and Regeneration; KU Leuven; Leuven Belgium
3. Maternal-Fetal Medicine Department; Institut Clínic de Ginecologia, Obstetrícia i Neonatologia (ICGON), Hospital Clínic; Barcelona Spain
4. Institut d'Investigacions Biomèdiques Augusto Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
5. Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Barcelona Spain