1. Department of Woman and Child Health and Public Health Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
2. Elizabeth Garrett Anderson Institute for Women's Health University College London London UK
3. Fetal Medicine Unit University College London Hospitals NHS Foundation Trust London UK
4. Department of Obstetrics University Medical Center Utrecht The Netherlands
5. Centre for Fetal Care, Department of Obstetrics and Gynaecology Queen Charlotte's and Chelsea Hospital, Imperial College London London UK
6. Department of Obstetrics and Gynecology Amsterdam University Medical Center (Location AMC), University of Amsterdam Amsterdam The Netherlands
7. Obstetrics and Gynecology Unit IRCCS Istituto Giannina Gaslini Genoa Italy