1. University Hospitals Leuven, Vlaams-Brabant, Belgium
2. MyFetUZ Fetal Research Center, KU Leuven, Belgium
3. Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Belgium
4. Fetal Medicine Unit, University Hospitals Leuven, Belgium
5. Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, PA
6. The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
7. Institute of Women's Health, University College London Hospitals, London, United Kingdom