1. BCNatal - (Hospital Clínic and Hospital Sant Joan de Deu), IDIBAPS; University of Barcelona, and Centre for Biomedical Research on Rare Diseases (CIBER-ER); Barcelona Spain
2. Department of Obstetrics and Gynecology, Fondazione Ca' Granda, Ospedale Maggiore Policlinico; Università degli Studi di Milano; Milan Italy
3. Biochemistry and Molecular Biology Research Centre for Nanomedicine; Hospital Universitari Vall d'Hebron, and Centre for Biomedical Research on Rare Diseases (CIBERER); Barcelona Spain
4. Department of Obstetrics, Maternal-Foetal Medicine Unit; Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona; Barcelona Spain
5. Maternal and Child Health and Development Network (SAMID) RD RD12/0026; Instituto de Salud Carlos III; Madrid Spain