1. Fetal Medicine and Surgery UnitFondazione Ca' Granda, Ospedale Maggiore Policlinico Milan Italy
2. Division of Woman and Child, Department of Obstetrics & GynaecologyUniversity Hospitals Leuven Leuven Belgium
3. Department of RadiologyStudio Diagnostico Eco Vimercate Italy
4. Research Department for Children's Cardiovascular DiseaseUCL Institute of Cardiovascular Science London UK