1. National Perinatal Epidemiology Unit Nuffield Department of Population Health University of Oxford UK
2. Center for Research on Population and Health American University of Beirut Lebanon
3. Université de Paris CRESS Obstetrical Perinatal and Pediatric Epidemiology Research Team EPOPé INSERM U1153 Paris France
4. Department of Anesthesiology and Critical Care Hôpital Armand Trousseau Assistance Publique des Hôpitaux de Paris France
5. Société Française d'Anesthésie et de Réanimation Research Network Paris France
6. Department of Obstetrics and Gynaecology Helsinki University Hospital Helsinki Finland
7. Department of Obstetrics Ghent University Hospital Ghent Belgium
8. Information Services Department THL Finnish Institute for Health and Welfare Helsinki Finland
9. Department of Neurobiology, Care Sciences and Society Karolinska Institute Stockholm Sweden
10. Faculty of Medicine and Health Sciences Ghent University Ghent Belgium
11. Research Laboratory for Human Reproduction Université Libre de Bruxelles Brussels Belgium
12. Perinatal Epidemiology Center (CEpiP) Brussels Belgium