1. Institute of Clinical Physiology, National Research Council Pisa Italy
2. Paediatric DepartmentHospital Lillebaelt Kolding Denmark
3. Fondazione Toscana Gabriele Monasterio Pisa Italy
4. Department of Woman‐Mother‐ChildUniversity Medical Center CHUV Lausanne Switzerland
5. Pole Femme‐Mère‐Enfants, CHR Felix Guyon, CHU La Réunion, Saint‐Denis La Réunion France
6. Department of GeneticsUniversity of Groningen, University Medical Center Groningen Groningen the Netherlands
7. Children's Hospital Zagreb, Centre of Excellence for Reproductive and Regenerative MedicineMedical School University of Zagreb Zagreb Croatia
8. Epidemiology DepartmentNational Institute of Health Doutor Ricardo Jorge Lisbon Portugal
9. Rare Diseases Research UnitFoundation for the Promotion of Health and Biomedical Research in the Valencian Region Valencia Spain
10. Malta Congenital Anomalies Register, Directorate for Health Information and Research Guardamangia Malta
11. Medical University of Graz Graz Austria
12. Department of Global Public Health and Primary CareUniversity of Bergen Bergen Norway
13. Division of Mental and Physical HealthNorwegian Institute of Public Health Bergen Norway
14. National Perinatal Epidemiology Unit, Nuffield Department of Population HealthUniversity of Oxford Oxford United Kingdom
15. European Commission, Joint Research Centre (JRC) Ispra Italy
16. Paris Registry of Congenital Malformations, Inserm UMR 1153—Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, DHU Risks in pregnancyParis Descartes University Paris France
17. South West Congenital Anomaly Register (SWCAR), Bristol Medical SchoolUniversity of Bristol Bristol United Kingdom
18. Public Health Division of GipuzkoaBiodonostia Research Institute Donostia‐San Sebastian Spain
19. HSE South East AreaDepartment of Public Health Kilkenny Ireland
20. Provinciaal Instituut voor Hygiene (PIH) Antwerp Belgium
21. IMER Registry (Emilia Romagna Registry of Birth Defects), Center for Clinical and Epidemiological ResearchUniversity of Ferrara Azienda Ospedaliero—Universitaria di Ferrara Ferrara Italy
22. HSE South (Cork & Kerry)Department of Public Health Cork Ireland
23. Auvergne Registry of Congenital Anomalies (CEMC‐Auvergne), Department of Clinical Genetics, Centre de Référence des Maladies RaresUniversity Hospital of Clermont‐Ferrand Clermont‐Ferrand France
24. Institute of Health & Society, Newcastle University/National Congenital Anomaly and Rare Disease Registration Service (NCARDRS), Public Health England Newcastle upon Tyne United Kingdom
25. Malformation Monitoring Centre Saxony‐Anhalt, Medical Faculty Otto‐von‐Guericke University Magdeburg Germany
26. Brittany Registry of Congenital Malformations, CHU Rennes, Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)—UMR_S 1085 Rennes France
27. French West Indies Registry, Registre des Malformations des Antilles (REMALAN), Maison de la Femme de la Mère et de l'EnfantUniversity Hospital of Martinique Fort‐de‐France France
28. Congenital Anomaly Register & Information Service for Wales (CARIS) Public Health Wales, Swansea United Kingdom
29. Wessex Clinical Genetics ServiceUniversity Hospitals Southampton Southampton United Kingdom
30. Department of Preventive MedicineEpidemiology Unit, Poznan University of Medical Sciences Poznan Poland
31. Khmelnytsky Perinatal CenterOMNI‐Net Ukraine Birth Defects Program Khmelnytsky Ukraine