[1] Univ Teaching Hosp Clermont Ferrand, Unit Pediat Pulmonol, CHU Estaing, F-63003 Clermont Ferrand, France
[2] Univ Teaching Hosp Clermont Ferrand, Dept Pediat Surg, CHU Estaing, F-63003 Clermont Ferrand, France
[3] Univ Teaching Hosp Clermont Ferrand, Dept Anesthesiol, CHU Estaing, F-63003 Clermont Ferrand, France