[1] BCNatal – Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu),
[2] IDIBAPS,undefined
[3] University of Barcelona,undefined
[4] Epidemiology and Population Health Research Group (GESP),undefined
[5] School of Public Health,undefined
[6] Faculty of Health,undefined
[7] Universidad del Valle,undefined
[8] Comfandi Health Services Research Group,undefined
[9] Centre for Biomedical Research on Rare Diseases (CIBER-ER),undefined
[10] Institució Catalana de Recerca i Estudis Avançats (ICREA),undefined
[11] Universitat Pompeu Fabra,undefined