1 Université de Paris, Epidemiology and Statistics Research Center/CRESS, INSERM (U1153 - Obstetrical, Perinatal and Pediatric Epidemiology Research Team [EPOPé]), INRA, F-75004 Paris, France.
2 EPIUnit-Institute of Public Health, University of Porto, Porto, Portugal.
3 CHU Lille, Department of Neonatal Medicine, Jeanne de Flandre Hospital, Lille, France.
4 Neonatal Intensive Care Unit, Centre Hospitalier Intercommunal de Créteil, Ile de France, France.
5 Reseau Perinatal, Val de Marne, Ile-de-France, France.
6 Maternité Port-Royal, AP-HP, APHP.Centre - Université de Paris, FHU PREMA, Paris, France.
7 Clinical Research Unit, Center for Clinical Investigation P1419, APHP.CUP, F-75014, Paris, France.