1. Fetal Medicine Unit, Obstetrics and Gynecology Service BioCruces Health Research InstituteHospital Universitario CrucesUniversity of the Basque Country (UPV/EHU) Barakaldo Spain
2. Fetal Medicine Unit Hospital Clínico Universitario Lozano Blesa Zaragoza Spain
3. Fetal Medicine Unit Obstetrics, Gynecology and Reproductive Medicine Department Institut Universitari Quirón‐Dexeus Barcelona Spain
4. Clinical Epidemiology Unit Hospital Universitario CrucesBioCruces Health Research Institute Barakaldo Spain
5. Maternal‐Fetal Medicine Unit Department of Obstetrics and Gynecology San Cecilio University Hospital Granada Spain
6. Fetal Medicine Unit Hospital Universitari Son Llàtzer Palma de Mallorca Spain
7. Unidad Medicina Fetal Centro Gutenberg Málaga Spain
8. Hospiten Group Canary Islands Spain
9. Maternal‐Fetal Medicine Unit Department of Obstetrics Vall d’Hebron University HospitalUniversitat Autònoma de Barcelona Barcelona Spain
10. CIBER de Epidemiología y Salud Pública (CIBERESP) Madrid Spain
11. Prenatal Diagnosis Unit, Obstetrics and Gynecology Service Hospital Universitario Donostia San Sebastián Spain
12. Fetal Medicine Unit La Arrixaca University hospital Murcia Spain