1. Centre for Maternal, Fetal and Infant Research, Institute of Nursing and Health Research Ulster University United Kingdom
2. Wolfson Institute of Preventive Medicine Queen Mary University of London United Kingdom
3. Department of Pharmacy University of Groningen the Netherlands
4. Paediatric Department Hospital Lillebaelt Kolding Denmark
5. Division of Medical Genetics CHUV Lausanne Switzerland
6. Department of Medical Genetics and Reproductive Health Children's University Hospital Zagreb Croatia
7. Eurocat Northern Netherlands University of Groningen, University Medical Center Groningen, Department of Genetics Groningen the Netherlands
8. Department of Health Information and Research Guardamangia Malta
9. Medical Birth Registry of Norway, the Norwegian Institute of Public Health and Department of Global Public Health and Primary Care University of Bergen Norway
10. Paris Registry of Congenital Anomalies, Obstetrical, Perinatal and Pediatric Epidemiology Research Team, Center for Biostatistics and Epidemiology INSERM U1153, Maternité de Port‐Royal PARIS France
11. Polish Registry of Congenital Malformations, Department of Medical Genetics Poznan Poland
12. Provinciaal Instituut voor Hygiene (PIH) Antwerp Belgium
13. IMER Registry (Emilia Romagna Registry of Birth Defects), Centre for Clinical and Epidemiological Research University of Ferrara and Azienda Ospedaliero Univerisitarion di Ferrara Italy
14. Health Service Executive Cork Ireland
15. Epidemiology and Health Promotion Macro‐Area Working Group, Unit of Environmental Epidemiology and Disease Registries CNR Institute of Clinical Physiology Pisa Italy
16. CARIS – Congenital Anomaly Register and Information Service for Wales, Public Health Wales Swansea United Kingdom
17. Mainz Model Birth Registry University Children's Hospital Mainz Germany