Pollen season is reflected on symptom load for grass and birch pollen‐induced allergic rhinitis in different geographic areas ‐ an EAACI Task Force Report

Pfaar O, Karatzas K, Bastl K, Berger U, Buters J, Darsow U, Demoly P, Durham SR, Galán C, Gehrig R, Gerth van Wijk R, Jacobsen L, Katsifarakis N, Klimek L, Saarto A, Sofiev M, Thibaudon M, Werchan B, Bergmann KC