1. BCNatal; Hospital Clínic of Barcelona and Hospital Sant Joan de Déu; Fetal i+D Fetal Medicine Research Centre; IDIBAPS; University of Barcelona; Barcelona Spain
2. Centre for Biomedical Research on Rare Diseases (CIBER-ER); Barcelona Spain
3. Hospital General Universitario Gregorio Marañón; Madrid Spain
4. Hospital Universitario Virgen Macarena; Sevilla Spain
5. Complejo Hospitalario Universitario lnsular Materno Infantil; Las Palmas de Gran Canaria Spain
6. Hospital Universitario de Basurto; Bilbao Spain
7. Hospital Puerta del Mar; Cádiz Spain
8. Hospital de Son Llàtzer; Mallorca Spain
9. Althaia Xarxa Assistencial Universitària de Manresa; Hospital de Sant Joan de Déu; Manresa Spain
10. Hospital Clínico Universitario Lozano Blesa; Instituto de Investigación Sanitaria de Aragón; Red SAMID, RETICS; Zaragoza Spain
11. Hospital de Sabadell, Corporació Sanitària Parc Taulí; Sabadell Spain
12. Institut Universitari Parc Taulí - UAB. Universitat Autónoma de Barcelona; Barcelona Spain
13. Hospital Universitario Quirón-Dexeus; Barcelona Spain
14. Consorci Sanitari de Terrassa; Terrassa Spain
15. Hospital Clínic of Barcelona; Clinical Trials Unit/Clinical Pharmacology Department; Hospital Clinic Barcelona; Barcelona Spain
16. Biostatistics and Data Management Core Facility; IDIBAPS; Hospital Clinic Barcelona; Barcelona Spain
17. Biostatistics Unit; School of Medicine; Universitat Autònoma de Barcelona; Barcelona Spain