1 Department of Respiratory Medicine & Allergology, Skane University Hospital, Institute for Clinical Science, Lund, Sweden.
2 Department of Clinical Pharmacy & Pharmacology, UMCG and, QPS-NL, Groningen, The Netherlands.
3 Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
4 Transylvania University Brasov, Brasov, Romania.
5 Department of Otorhinolaryngology and Center of Allergy and Environment, Klinikum rechts der Isar, Technical University Munich, Munich, Germany.
6 Department of Otorhinolaryngology, Ghent University, Ghent, Belgium.
7 Department of Otorhinolaryngology, University Hospital Leuven, Leuven, Belgium.
8 Department of Oto-rhino-laryngology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
9 Division of Respirology, Department of Medicine, mcMaster University and St. Joseph's Healthcare, Hamilton, Ontario, Canada.
10 Departments of Medicine and Microbiology, APC Microbiome Ireland, National University of Ireland, Cork, Ireland.
11 Department of Allergology and Clinical Immunology, Faculty of Medicine in Pilsen, Charles University, Prague, Czech Republic.
12 Division of Pediatric Respiratory Diseases, Pediatric Department, 2nd Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic.
13 Department of Respiratory Medicine, First Faculty of Medicine of Charles University and Thomayer Hospital, Prague, Czech Republic.