[1] Karolinska Inst, Div Otorhinolaryngol, Dept Clin Sci Intervent & Technol, Stockholm, Sweden
[2] Nacka Narsjukhus Proxima AB, Stockholm, Sweden
[3] Karolinska Inst, Ctr Allergy Res, Stockholm, Sweden
[4] Karolinska Inst, Div Resp Med & Allergy, Dept Med, Stockholm, Sweden
[5] Clinfile AB, Karlskrona, Sweden