1. Obstetrical, Perinatal and Pediatric Epidemiology Research Team, Centre of Research in Epidemiology and StatisticS Université Paris Cité, INSERM Paris France
2. Inserm CIC 1413 Nantes University Hospital Nantes France
3. Department of General Pediatrics and Pediatric Infectious Diseases AP‐HP, Necker‐Enfants Malades Hospital Université Paris Cité Paris France
4. Department of Pediatric Emergency Care Nantes University Hospital Nantes France
5. Unité d'Accueil des Enfants en Danger Nantes University Hospital Nantes France
6. Department of Pediatrics Nantes University Hospital Nantes France