Beatriz Cabanillas1, Cezmi A Akdis2,3, Natalija Novak4. 1. Department of Allergy, Research Institute Hospital Doce de Octubre, Madrid, Spain. 2. Swiss Institute of Allergy and Asthma Research (SIAF, University of Zurich, Davos, Switzerland. 3. Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland. 4. Department of Dermatology and Allergy, University Hospital Bonn, Bonn, Germany.