1. Department of Obstetrics Jeanne de Flandre University Hospital (CHRU) Lille France
2. Gynecology‐Obstetrics Service Le Kremlin‐Bicêtre Hospital Public Hospital Assistance of Paris (APHP) Université Paris Sud Orsay France
3. Department of Biostatistics University of Lille EA 2694 ‐ Public Health: Epidemiology and Quality of Care University Hospital of Lille (CHU) Lille France
4. Women’s‐Maternity‐Couple Center Gynecology‐Obstetrics Department Paule de Viguier Hospital University Hospital of Toulouse Toulouse France
5. UMR 1027 INSERM Université Paul‐Sabatier Toulouse III Toulouse France