[1] Robert Debre Childrens Hosp, AP HP, Neonatal Intens Care Unit, Paris, France
[2] Childrens Univ Hosp Geneva, Div Neonatol & Paediat Intens Care, Geneva, Switzerland
[3] Univ Geneva, Geneva, Switzerland
[4] Univ Paris Diderot, Sorbone Paris Cite, Inserm U1141, Paris, France
[5] Robert Debre Childrens Hosp, AP HP, Inserm U1123, Unit Clin Epidemiol, Paris, France
[6] Univ Paris Diderot, Sorbonne Paris Cite, CIC EC 1426, Paris, France
[7] CHU Robert Debre, AP HP, Neonatal Intens Care Unit, Paris, France
[8] CHU Robert Debre, AP HP, INSERM U1141, Paris, France
[9] CH Corbeil Essonnes, Neonatal Intens Care Unit, Corbeil Essonnes, France
[10] CHR St Denis, Neonatal & Pediat Intens Care Unit, La Reunion, France
[11] CHU Rennes, Neonatal Intens Care Unit, Rennes, France
[12] CHI Poissy, Neonatal Intens Care Unit, CHI Poissy, France
[13] CHU Hop Nord, AP HP, Neonatal Intens Care Unit, Marseille, France
[14] CHU Grenoble, Neonatal Intens Care Unit, Grenoble, France
[15] CHU Antoine Beclere, AP HP, Neonatal Intens Care Unit, Paris, France
[16] CH Pontoise, Neonatal Intens Care Unit, Pontoise, France
[17] CH St Denis, Neonatal Intens Care Unit, St Denis, Reunion, France
[18] CHU Bordeaux, Neonatal & Pediat Intens Care Unit, Bordeaux, France
[19] CHU Besancon, Neonatal & Pediat Intens Care Unit, Besancon, France
[20] CHU Reims, Neonatal & Pediat Intens Care Unit, Reims, France
[21] CHU Rouen, Neonatal & Pediat Intens Care Unit, Rouen, France
[22] CHU Caen, Neonatal Intens Care Unit, Caen, France
[23] CHU Angers, Neonatal Intens Care Unit, Angers, France
[24] CHU Concept, AP HP, Neonatal Intens Care Unit, Marseille, France
[25] CHU, Neonatal Intens Care Unit, Strasbourg, France
[26] CHU Cochin Broca Hotel Dieu, AP HP, Neonatal Intens Care Unit Port Royal, Paris, France
[27] CHU Armand Trousseau, AP HP, Neonatal & Pediat Intens Care Unit, Paris, France
[28] CHRU Montpellier, Neonatal Intens Care Unit, Montpellier, France
[29] Univ Paris 05, AP HP, AGEPS, Dept Essais Clin,Dept Sante Publ, Paris, France
[30] Univ Calgary, Reg Director Calgary Zone, Sect Head Neonatol, Calgary, AB, Canada
[31] Univ New Mexico, Sch Med, Albuquerque, NM 87131 USA
[32] Direct Rech Clin & Dev, AP HP, Paris, France
[33] Robert Debre Childrens Hosp, AP HP, Unit Clin Epidemiol, Paris, France