1. Department of Paediatrics and Adolescent Medicine Lillebaelt Hospital, University Hospital of Southern Denmark Kolding Denmark
2. Department of Regional Health Research University of Southern Denmark Odense Denmark
3. Population Health Research Institute, St George's, University of London London UK
4. Faculty of Life & Health Sciences, Ulster University Belfast UK
5. Rare Diseases Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region Valencia Spain
6. THL Finnish Institute for Health and Welfare, Department of Knowledge Brokers Helsinki Finland
7. Region Stockholm, Academic Primary Health Care Centre Stockholm Sweden
8. Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
9. Centre for Epidemiology and Clinical Research, University of Ferrara and Azienda Ospedaliero Universitario di Ferrara Ferrara Italy
10. Unit of Epidemiology of Rare Diseases and Congenital Anomalies, Institute of Clinical Physiology, National Research Council Pisa Italy
11. Malformation Monitoring Centre Saxony‐Anhalt, Medical Faculty Otto‐von‐Guericke‐University Magdeburg Magdeburg Germany
12. Congenital Anomaly Registers & Information Service for Wales (CARIS), Public Health Knowledge & Research, Public Health Wales Swansea UK