1. Center for Fetal Diagnosis and Treatment The Children's Hospital of Philadelphia University of Pennsylvania Perelman School of Medicine Philadelphia PA USA
2. MyFetUZ Fetal Research Center Department of Development and Regeneration Cluster Woman and Child, Biomedical Sciences KU Leuven Leuven Belgium
3. Department of Obstetrics and Gynecology Division of Woman and Child Fetal Medicine Unit University Hospital Gasthuisberg Leuven Belgium
4. Institute of Women's Health University College London Hospitals London UK