1 Department of Anesthesia and Intensive Care, Hôpitaux Universitaires Paris Centre, AP-HP, Inserm UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, DHU Risks in Pregnancy, Paris Descartes University, Paris, France, marie-pierre.bonnet@cch.aphp.fr Department of Anesthesia and Intensive Care, Hôpitaux Universitaires Paris Sud, AP-HP, Paris Sud University, Paris, France Obstetrical, Perinatal and Pediatric Epidemiology, Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, Descartes University, Paris, France Department of Obstetrics and Gynecology, Hôpital Universitaire Robert-Debré, Université Paris Diderot Sorbonne Paris Cité, Paris, France.