1. Cruces University Hospital (UPV/EHU); BioCruces Health Research Institute; Vizcaya Spain
2. Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, University of London; London UK
3. Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute; St George's University of London; London UK
4. Formerly of the University of California; Irvine, Orange CA USA
5. Department of Obstetrics; Jena University Hospital; Jena Germany
6. Department of Obstetrics and Gynecology; University Hospital, Inselspital, University of Bern; Bern Switzerland