1. Leiden University Medical CenterDepartment of Obstetrics and Fetal Medicine Leiden The Netherlands
2. Department of Obstetrics & GynecologyStanford University School of Medicine Stanford CA USA
3. Elliot Health System Manchester NH USA
4. Department of Pediatric GeneticsAMC University Hospital Amsterdam The Netherlands
5. Department of Obstetrics & Gynecology, Division of Maternal Fetal MedicineUniversity of South Florida Tampa FL USA
6. Department of Maternal‐Fetal Medicine, Institute Gynecology, Obstetrics and NeonatologyUniversity of Barcelona Medical School Catalonia Spain