Important research questions in allergy and related diseases: nonallergic rhinitis: a GA2LEN paper

Bousquet, J; Fokkens, W; Burney, P; Durham, Sr; Bachert, C; Akdis, Ca; Canonica, Giorgio; Dahlen, Se; Zuberbier, T; Bieber, T; Bonini, S; Bousquet, Pj; Brozek, Jl; Cardell, Lo; Crameri, R; Custovic, A; Demoly, P; VAN WIJK, Rg; Gjomarkaj, M; Holland, C; Howarth, P; Humbert, M; Johnston, Sl; Kauffmann, F; Kowalski, Ml; Lambrecht, B; Lehmann, S; Leynaert, B; LODRUP CARLSEN, K; Mullol, J; Niggemann, B; NIZANKOWSKA MOGILNICKA, E; Papadopoulos, N; Passalacqua, Giovanni; Schünemann, Hj; Simon, Hu; TODO BOM, A; Toskala, E; Valenta, R; Wickman, M; Zock, Jp