[1] CHU Bordeaux, Dept Pediat, F-33076 Bordeaux, France
[2] CHU Bordeaux, CEDRE, Ctr Rech, Hop Pellegrin Enfants, F-33076 Bordeaux, France
[3] Univ Bordeaux 2, Lab Physiol Cellulaire Resp, F-33076 Bordeaux, France
[4] Univ Bordeaux 2, INSERM, E356, F-33076 Bordeaux, France
[5] Ctr Hosp Cote Basque, Dept Pediat, F-64100 Bayonne, France