1. From the National Centre for Epidemiology (ER‐R, LS, IG) Instituto de Salud Carlos III Madrid Spain
2. Maimonides Biomedical Research Institute of Cordoba (IMIBIC) (ER‐R) Reina Sofia University Hospital University of Cordoba Cordoba Spain
3. ECEMC, Research Center on Congenital Anomalies (CIAC) (LC, EB‐S) Instituto de Salud Carlos III Madrid Spain
4. Institute of Rare Diseases Research (IIER) (EB‐S) Instituto de Salud Carlos III Madrid Spain
5. Universidad Autónoma de Madrid/IdiPAZ (IG) Madrid Spain