Klimek L, M J, Akdis C, J B, Akdis M, C B, I A, Ansotegui I, Bedbrook A, Bosnic-Anticevich S, et al. ARIA-MASK study group. Handling of allergen immunotherapy in the COVID-19 pandemic: An ARIA-EAACI statement. Allergy 2020 [Internet]. 2020.