Universidade do Porto - Department of Community Medicine, Health Information and Decision, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Universidade de Coimbra - Allergy and Clinical Immunology Unit, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Medical Consulting Czarlewski, Medical University of Warsaw - Department of Pediatric Respiratory Diseases and Allergology, Imperial College London - Immunomodulation and Tolerance Group, Université Laval - Quebec Heart and Lung Institute, Catholic University of Milan - Department of Cardiovascular and Thoracic Sciences, University of Turin - Department of Medical Sciences, Allergy and Clinical Immunology Unit, Humanitas University - Department of Biomedical Sciences, Federal University of Bahia (UFBA) - Fundaçao ProAR, Istanbul University - Department of Pulmonary Diseases, University of Helsinki - Skin and Allergy Hospital, Medical University of Lodz - Division of Internal Medicine, Asthma and Allergy, Vilnius University - Institute of Biomedical Sciences, Médica Sur Clinical Foundation and Hospital - Center of Excellence in Asthma and Allergy, CHU Sart-Tilman - Department of Pulmonary Medicine, Medical University of Gdańsk - Department of Allergology, Ecole Polytechnique, Palaiseau, Humanitas University - Department of Biomedical Sciences, Medical University of Gdańsk - Department of Allergology, Universidad Autónoma de Madrid - FIIS-Fundacion Jimenez Diaz University Hospital, - Department PROMISE, University of the Interior of Beira - Clinical & Experimental Lung Centre, - Unit of Geriatric Immunoallergology, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Transilvania University of Brasov, ARIA, Free University of Berlin (FUB) - Institute of Allergology, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Universidade do Porto - Department of Community Medicine, Health Information and Decision, The University of Sydney - Quality Use of Respiratory Medicine Group, Ghent University - Department of Respiratory Medicine, Johannes Gutenberg University Mainz - Department of Pulmonary Medicine, Azienda USL Toscana Centro - SOS Allergology and Clinical Immunology, Hôpital Nord - Clinique des Bronches, Allergie et Sommeil, Universidade de Coimbra - Department of Pneumology, University of Strasbourg - Allergy Division, Universita di Cagliari - Unit of Allergy and Clinical Immunology, University of Paris-Saclay - Pôle des Maladies des Voies Respiratoires, Medical University of Gdańsk - Department of Pneumonology, Ghent University - Department of Respiratory Medicine, Uniwersytet Medyczny im Wrocławiu - Department of Clinical Immunology, Universitätsmedizin Mainz - Department of Otolaryngology, Head and Neck Surgery, Medical University of Lodz - Division of Internal Medicine, Asthma and Allergy, KYomed INNOV, Unidad Guadalajara, University of Helsinki - Skin and Allergy Hospital, Hospital CUF Descobertas - Allergy Center, University of Nantes - INSERM, Center of Allergy, Immunology and Respiratory Diseases, National Hospital Organization (NHO) - Tokyo National Hospital, University of Athens - Allergy Department, University of Ferrara - Respiratory Medicine, University of Liège - Department of Public Health, University of Marburg - Department of Otorhinolaryngology, Head and Neck Surgery, Benemérita Universidad Autónoma de Puebla (BUAP) - Allergy and Clinical Immunology Department, Universidade de Coimbra - Department of Pneumology, University of Nantes - INSERM, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Medical University of Warsaw - Department of Prevention of Environmental Hazards, Allergology and Immunology, University of Edinburgh - Usher Institute, University of Copenhagen - Section of Respiratory Medicine, Imperial College London - National Heart and Lung Institute (NHLI), Vilnius University - Institute of Clinical Medicine, Catholic University of Louvain (UCL) - Department of Chest Medicine, Universidade do Porto - Department of Community Medicine, Health Information and Decision, Celal Bayar University - Department of Pulmonology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Barcelona Institute for Global Health (ISGlobal), Universidade do Porto - Department of Community Medicine, Health Information and Decision and Humboldt-Universität zu Berlin - Charité, Univeersitätsmedizin Berlin