1. Department of Obstetrics and Gynecology Division of Obstetrics and Fetal Medicine Erasmus MC University Medical Center Rotterdam Rotterdam The Netherlands
2. Department of Obstetrics Leiden University Medical Center Leiden The Netherlands
3. Department of Medical Ethics & Health Law Leiden University Medical Center Leiden The Netherlands
4. Department of Neurosurgery Erasmus MC University Medical Center Rotterdam Rotterdam The Netherlands
5. Academic Department of Development and Regeneration Biomedical Sciences KU Leuven Leuven Belgium
6. Department of Gynaecology University Hospitals Leuven Leuven Belgium
7. Johns Hopkins Center for Fetal Therapy Department of Gynecology & Obstetrics Johns Hopkins University Baltimore Maryland USA