1. Department of Paediatrics and Adolescent Medicine, Lillebaelt Hospital University Hospital of Southern Denmark Kolding Denmark
2. Section of Epidemiology, Department of Public Health University of Copenhagen Copenhagen Denmark
3. Population Health Research Institute, St George's University of London London UK
4. Institute of Nursing and Health Research Ulster University Londonderry Northern Ireland UK
5. IMER Registry, Centre for Clinical and Epidemiological Research University of Ferrara and Azienda Ospedaliero Universitario di Ferrara Ferrara Italy
6. Rare Disease Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region Valencia Spain
7. Institute of Clinical Physiology National Research Council Pisa Italy
8. Department of Knowledge Brokers THL Finnish Institute for Health and Welfare Helsinki Finland
9. Region Stockholm Academic Primary Health Care Centre Stockholm Sweden
10. Department of Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
11. Congenital Anomaly Register and Information Service for Wales (CARIS), Public Health Knowledge and Research Public Health Wales Swansea UK
12. Clinical Genetics University Hospital Southampton Southampton UK