1. Department of Obstetrics and Gynecology Hôpitaux Universitaires de Strasbourg Strasbourg France
2. Department of Obstetrics and Gynecology Center Hospitalier Princesse Grace Monaco Monaco
3. Epidemiology and Statistics Research Center/CRESS INSERMINRAUniversity of Paris Paris France
4. EPIUnit – Institute of Public Health University of Porto Porto Portugal
5. AP‐HP Port‐Royal Maternity University Paris DescartesHôpitaux Universitaires Paris‐Centre Paris France
6. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
7. Pôle Femme Mère Nouveau‐né CHU LilleJeanne de Flandre HospitalUniversity of Lille Lille France