1. Fetal Medicine Centre; Birmingham Women's and Children's Foundation Trust; Birmingham UK
2. Institute of Metabolism and Systems Research; College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
3. Maternal and Fetal Medicine; Ian Donald Fetal Medicine Centre; Queen Elizabeth University Hospital; Glasgow UK
4. Department of Obstetrics and Gynaecology; Paris Descartes University; Paris France
5. Department of Obstetrics and Fetal Medicine; Necker-Enfants-Malades Hospital; Paris France