1. INSERM (U1153); Obstetrical, Perinatal and Pediatric Epidemiology Research Team; Center for Epidemiology and Biostatistics (U1153); Paris-Descartes University; Sorbonne Paris-Cité Paris France
2. Perinatal Epidemiology and Reproductive Health Unit; Public Health School; Free University of Bruxelles; Brussels Belgium
3. Department of Obstetrics and Gynecology; University Hospitals of Geneva; Geneva Switzerland
4. Maternité Port Royal; Cochin Saint-Vincent-de-Paul Hospital; Assistance Publique Hôpitaux de Paris; Université Paris-Descartes; Sorbonne Paris-Cité Paris France