1. Section of Rhinology and Allergy, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg Philipps‐Universität Marburg Marburg Germany
2. Department of Otorhinolaryngology Medical University of Vienna Vienna Austria
3. Department of Otorhinolaryngology, Wiener Gesundheitsverbund Hospital Hietzing Vienna Austria
4. Department of Botany University of Innsbruck Innsbruck Austria
5. Environmental Informatics Research Group, School of Mechanical Engineering Aristotle University of Thessaloniki Thessaloniki Greece
6. German Pollen Information Service Foundation Berlin Germany
7. Fraunhofer Institute for Translational Medicine and Pharmacology ITMP Allergology and Immunology Berlin Germany
8. Institute of Allergology, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Charité—Universitätsmedizin Berlin Berlin Germany