[1] Univ Oslo, Rikshosp, Fac Med, Dept Paediat,Med Ctr,Norwegian Sch Sport Sci, NO-0791 Oslo, Norway
[2] Royal Prince Alfred Hosp, Dept Resp Med, Camperdown, NSW 2050, Australia
[3] Univ Lund Hosp, Dept Resp Med & Allergol, S-22185 Lund, Sweden
[4] Univ Naples 2, Inst Neurobiol & Mol Med Rome Allergy & Clin Immu, Naples, Italy
[5] Univ Genoa, Dipartimento Med Interna, Genoa, Italy
[6] Univ Genoa, Dept Internal Med, DIMI, I-16126 Genoa, Italy
[7] Blackrock Clin, Blackrock, County Dublin, Ireland
[8] Univ Porto, Hosp S Joao, Fac Med, Serv & Lab Imunol, P-4100 Oporto, Portugal
[9] Policlin Univ Cagliari, Cagliari, Italy
[10] Olymp Training Ctr CAR, Sports Physiol Dept, Barcelona, Spain
[11] Univ Helsinki, Cent Hosp, Skin & Allergy Hosp, Dept Allergy, Helsinki, Finland
[12] Karolinska Inst, Lung & Allergy Res Div Physiol IMM, S-10401 Stockholm, Sweden
[13] Dipartimento Med Clin, Rome, Italy
[14] Med Univ Sofia, Clin Ctr Allergol, Sofia, Bulgaria
[15] Univ Ghent, Dept Otorhinolaryngol, B-9000 Ghent, Belgium