1. Department of neonatal intensive care unit; Hospices Civils de Lyon; Hôpital Femme Mère Enfant; Lyon 1 University; Lyon France
2. Laboratory of Biometrics and Evolutionary Biology; Department of biostatistics; Equipe Biostatistique-Santé; Hospices Civils de Lyon; CNRS; UMR5558; Lyon 1 University; Lyon France
3. Laboratory of Biometrics and Evolutionary Biology; INSERM CIC 1407; EPICIME; UMR 5558 CNRS; Hospices Civils de Lyon; Lyon 1 University; Lyon France