Affiliations

• ¹ Department of Otorhinolaryngology, Academic Medical Centre, Amsterdam, The Netherlands.
• ² European Forum for Research and Education in allergy and Airway Diseases (EUFOREA), Brussels, Belgium.
• ³ Ghent University Hospital, Ghent, Belgium.
• ⁴ Karolinska Institute, Stockholm, Sweden.
• ⁵ INSERM U 1168, VIMA: Ageing and Chronic Diseases Epidemiological and Public Health Approaches, Villejuif, Université Versailles St-Quentin-en-Yvelines, UMR-S 1168, Montigny le Bretonneux, France.
• ⁶ MACVIA-France and fondation FMC-VIA-LR, Montpellier, France.
• ⁷ Department of Respiratory Medicine, Ghent University Hospital, Gent, Belgium.
• ⁸ Department of Pneumology, CHU Liege, GIGA I3, University of Liege, Liege, Belgium.
• ⁹ Department of Pulmonology, Cliniques Universitaires St-Luc and Research Pole of Pneumology, ENT and Dermatology, Université Catholique de Louvain, Brussels, Belgium.
• ¹⁰ Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim, Universitätsmedizin Mannheim, Heidelberg University, Mannheim, Germany.
• ¹¹ Center for Rhinology and Allergology, Wiesbaden, Germany.
• ¹² Centre of Academic Primary Care, University of Aberdeen, Aberdeen, UK.
• ¹³ Observational and Pragmatic Research Institute, Singapore, Singapore.
• ¹⁴ Department of Otorhinolaryngology, University of Crete School of Medicine, Heraklion, Greece.
• ¹⁵ The Royal National Throat Nose & Ear Hospital, London, UK.
• ¹⁶ Medtronic ENT, Tolochenaz, Switzerland.
• ¹⁷ Chordate Medical, Kista, Sweden.
• ¹⁸ Clinical Division of Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium.