1. Department of Obstetrics and Gynecology, Amsterdam University Medical Center (Location AMC) University of Amsterdam Amsterdam The Netherlands
2. Unit of Fetal Medicine and Prenatal Diagnosis Institute for Maternal and Child Health, IRCCS Burlo Garofolo Trieste Italy
3. Department of Medicine, Surgery and Health Sciences University of Trieste Trieste Italy
4. Department of Metabolism, Digestion and Reproduction, Imperial College London London UK
5. Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College NHS Trust London UK