University of Erlangen-Nuremberg-Friedrich Alexander Universität Erlangen Nürnberg - Department of Molecular Pneumology, Harvard Medical School - Channing Division of Network Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg - Department of Allergy and Pneumology, University of Erlangen-Nuremberg-Friedrich Alexander Universität Erlangen Nürnberg - Department of Molecular Pneumology, Turku University Hospital - Department of Clinical Microbiology, Friedrich-Alexander-Universität Erlangen-Nürnberg - Department of Allergy and Pneumology, National Kapodistrian University of Athens - Department of Allergy, Medical University of Lodz - Department of Rheumatology and Allergy, University of Turku - Department of Pediatrics, University of Gent - Upper Airways Research Laboratory, University of Zurich - Swiss Institute of Allergy and Asthma Research (SIAF), Friedrich-Alexander-Universität Erlangen-Nürnberg - Department of Allergy and Pneumology, Medical University of Lodz - Department of Rheumatology and Allergy, University of Turku - Department of Pediatrics, University of Gent - Upper Airways Research Laboratory, University of Zurich - Swiss Institute of Allergy and Asthma Research (SIAF), National Kapodistrian University of Athens - Department of Allergy, Harvard Medical School - Channing Division of Network Medicine, Harvard Medical School - Channing Division of Network Medicine and University of Erlangen-Nuremberg-Friedrich Alexander Universität Erlangen Nürnberg - Department of Molecular Pneumology