[1] Hop Armand Trousseau, AP HP, Unite Fonct Physiol Explorat Fonct Resp, Paris, France
[2] Natl Inst Resp Dis, Dept Pulm Physiol, Mexico City, DF, Mexico
[3] Pontifical Catholic Univ Rio Grande do Sul PUCRS, Sch Med, Porto Alegre, RS, Brazil
[4] McGill Univ Hlth Ctr, Montreal Childrens Hosp, Dept Pediat, Montreal, PQ, Canada
[5] Meyer Childrens Hosp, Pediat Pulm Unit, Florence, Italy
[6] Univ Washington, Sch Med, Dept Pediat, Seattle Childrens Res Inst, Seattle, WA 98195 USA
[7] Univ Queensland, Child Hlth Res Ctr, South Brisbane, Qld, Australia
[8] UPMC Childrens Hosp Pittsburgh, Div Pediat Pulmonol, Pittsburgh, PA USA
[9] Celal Bayar Univ, Dept Pediat Allergy & Pulmonol, Med Fac, Manisa, Turkey