1. Department of Otorhinolaryngology, Head and Neck Surgery; Medical Faculty Mannheim; Universitätsmedizin Mannheim; Heidelberg University; Mannheim Germany
2. Center for Rhinology and Allergology; Wiesbaden Germany
3. Aerobiology and Pollen Information Research Unit; Department of Oto-Rhino-Laryngology; Medical University of Vienna; Vienna Austria
4. ZAUM; Center of Allergy & Environment; Helmholtz Center Munich/Technische Universität München; Member of the German Center for Lung Research (DZL); Munich Germany
5. Kühne Foundation; Christine Kühne-Center for Allergy Research and Education (CK-CARE); Munich Germany
6. Section of Allergy and Clinical Immunology; Imperial College London; London UK
7. National Heart & Lung Institute; Royal Brompton Hospital; London UK
8. Federal Office of Meteorology and Climatology MeteoSwiss; Payerne Switzerland
9. Department of Dermatology and Allergy Biederstein; Technical University of Munich (TUM); Munich Germany
10. Département de Pneumologie et Addictologie; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
11. UPMC Paris 06; UMR-S 1136; IPLESP; Equipe EPAR; Sorbonne Universités; Paris France
12. Department of Botany; Ecology and Plant Physiology; University of Córdoba; Córdoba Spain
13. Federal Office of Meteorology and Climatology MeteoSwiss; Zurich Switzerland
14. Section of Allergology; Department of Internal Medicine; Erasmus MC; Rotterdam The Netherlands
15. ALC; Allergy Learning and Consulting; Copenhagen Denmark
16. Finnish Meteorological Institute; Helsinki Finland
17. RNSA (Réseau National de Surveillance Aérobiologique); Brussieu France
18. Foundation German Pollen Information Service; Berlin Germany