Onset of Action of the Fixed Combination Intranasal Azelastine-Fluticasone Propionate in an Allergen Exposure Chamber. Bousquet, Jean; Meltzer, Eli O.; Couroux, Peter; Koltun, Arkady; Kopietz, Ferdinand; Munzel, Ullrich; Kuhl, Hans Christian; Nguyen, Duc Tung; Salapatek, Anne Marie; Price, David. The Journal of Allergy and Clinical Immunology: In Practice. 2018; 6: p.1726-1732.e6. doi:10.1016/j.jaip.2018.01.031Article