[1] Hop Necker Enfants Malad, AP HP, Serv Pneumol & Allergol Pediat, F-75015 Paris, France
[2] Ctr Hosp Intercommunal Creteil, Serv Pediat, Creteil, France
[3] CHU St Justine, Dept Pediat, Serv Allergie Immunol & Rhumatol, Montreal, PQ, Canada
[4] CHUM, Dept Med, Serv Allergie & Immunol Clin, Montreal, PQ, Canada