[1
]Neonatal Intensive Care Unit, CHI Créteil, CRETEIL, France
[2
]INSERM, U1153, Obstetrical, Perinatal and Pediatric Epidemiology Team, Epidemiology
and Biostatistics Sorbonne, Paris Descartes University, France
[3
]Pediatric and Neonatal Intensive Care Unit, CHU Toulouse, Toulouse, France
[4
]Neonatal Intensive Care Unit, Hospices civils de Lyon, Lyon, France
[5
]Neonatal Intensive Care Unit, CHU Amiens, Amiens, France
[6
]Neonatal Intensive Care Unit, CHU Caen, Caen, France
[7
]Neonatal Intensive Care Unit, CHU Tours, Tours, France
[8
]Neonatal Intensive Care Unit, CHU Rennes, Rennes, France
[9
]Clinical Research Center, CHI Créteil, Créteil, France
[10
]ACTIV, St Maur, France
[11
]IMRB- GRC GEMINI, Université Paris Est, Créteil, France
[12
]INSERM, U1153, METHODS Team, Epidemiology and Statistics Sorbonne Paris Cité Research
Center, Paris Descartes University, Hotel-Dieu Hospital (AP-HP), France.