[1] Lorraine Univ, DevAH Res Unit, F-54500 Vandoeuvre Les Nancy, France
[2] Ctr Hosp Reg Univ, Serv Medecine & Reanimat Neonatale, Matern Reg, F-54035 Nancy, France
[3] CHU, Serv Explorat Fonct Resp, F-54500 Vandoeuvre Les Nancy, France
[4] Hop Croix Rousse, Serv Neonatol & Reanimat Neonatale, Hosp Civils Lyon, F-69004 Lyon, France
[5] Hop Antoine Beclere, Serv Reanimat Neonatale, F-92141 Clamart, France
[6] Ctr Hosp Univ Concept, Serv Med & Reanimat Neonatale, F-13385 Marseille, France
[7] Ctr Hosp Univ Amiens Picardie, Serv Medecine Neonatale, Surveillance Continue & Reanimat Pediat Polyvalent, F-80000 Amiens, France
[8] Ctr Hosp Univ Charles Nicolle, Un Reanimat Pediat & Neonatale, F-76000 Rouen, France
[9] Ctr Hosp Intercommunal Gregoire, Dept Femmes Enfants, F-93100 Montreuil, France
[10] Ctr Hosp Reg Univ, Serv Medecine Neonatale, Sect Reanimat Neonatale, F-59037 Lille, France