1. Department of Maternal-Fetal Medicine, Institute Clínic of Gynecology, Obstetrics and Neonatology (ICGON), Hospital Clinic-IDIBAPS; University of Barcelona and Centre for Biomedical Research on Rare Diseases (CIBER-ER); Barcelona Spain
2. Maternal-Fetal Unit, CEDIFETAL; Centro de Diagnóstico de Ultrasonido e Imágenes, CEDIUL; Barranquilla Colombia
3. Fondazione Ca' Granda, Ospedale Maggiore Policlinico, Dipartimento Ostetricia e Ginecologia; Università degli Studi di Milano; Milan Italy
4. Department of Obstetrics and Gynecology; Catholic University of the Sacred Heart; Rome Italy
5. Department of Pathology; Hospital Clinic-IDIBAPS, Barcelona, Spain