1. Department of Obstetrics, Division of Fetal Medicine; Leiden University Medical Center; Leiden The Netherlands
2. Department of Paediatrics, Division of Neonatology; Leiden University Medical Center; Leiden The Netherlands
3. Department of Obstetrics and Gynecology, Division of Fetal Medicine; University Hospitals KU Leuven; Leuven Belgium
4. Jackson Fetal Therapy Institute; Jackson Memorial Hospital; Miami FL USA
5. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Keck School of Medicine; University of Southern California; Los Angeles CA USA
6. Feto-Maternal Medicine University of New South Wales - Liverpool Hospital Liverpool and Royal Hospital for Women; Randwick, Sydney New South Wales Australia
7. Department of Obstetrics and Gynecology, Fetal Medicine Unit; Hospital Italiano de Buenos Aires; Buenos Aires Argentina