[1] Univ Hosp Montpellier, Dept Resp Dis, Montpellier, France
[2] Univ London Imperial Coll Sci Technol & Med, Natl Heart & Lung Inst, Sect Allergy & Clin Immunol, London SW7 2AZ, England
[3] Hosp Med Sur, Dept Allergy, Mexico City, DF, Mexico
[4] Hop Arnaud Villeneuve, Serv Malad Resp, Inserm U657, F-34295 Montpellier, France
[5] Univ Genoa, Dept Internal Med, I-16126 Genoa, Italy
[6] Ghent Univ Hosp, Upper Airways Res Lab URL, B-9000 Ghent, Belgium
[7] McMaster Univ, Dept Clin Epidemiol & Biostat, Hamilton, ON, Canada
[8] McMaster Univ, Dept Med, Hamilton, ON, Canada
[9] Creighton Univ, Dept Med, Div Allergy & Immunol, Omaha, NE 68178 USA
[10] Univ Porto, Biostat & Med Informat Dept, P-4100 Oporto, Portugal
[11] Univ Porto, Div Allergy, P-4100 Oporto, Portugal
[12] Aarhus Univ Hosp, Dept Resp Dis, DK-8000 Aarhus, Denmark
[13] Univ Aachen, Dept Dermatol, D-5100 Aachen, Germany
[14] Univ Porto, CINTESIS, P-4100 Oporto, Portugal
[15] Charite, Dept Dermatol, Allergy Ctr Charite, D-13353 Berlin, Germany
[16] Charite Hosp, Dept Pediat, Berlin, Germany
[17] Inserm 1018, CESP, Villejuif, France