[1] Hosp Infantil Cord, Dept Allergol, Cordoba, Argentina
[2] State Univ Ghent, Dept Otorhinolaryngol, Ghent, Belgium
[3] Hosp Estefania, Dept Allergol & Clin Immunol, Lisbon, Portugal
[4] Allergy & Asthma Med Grp & Res Ctr, Dept Allergy & Asthma, San Diego, CA USA
[5] Aventis Pharma, Romainville, France