1. Respiratory Unit for Continuity of Care, IRCCS Ospedale Policlinico San Martino, Department of Internal Medicine (DiMI), University of Genoa, Genoa, Italy
2. Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
3. Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Respiratory Unit and Cystic Fibrosis Adult Center, Milan, Italy
4. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
5. IRCCS Humanitas Research Hospital, Personalized Medicine, Asthma and Allergy, Rozzano, Milan, Italy
6. Department of Surgery, Medicine, Molecular Biology and Critical Care, University of Pisa, Pisa, Italy
7. Section of Respiratory Medicine, Department of Medical and Surgical Sciences, University Polyclinic of Modena, University of Modena and Reggio Emilia, Modena, Italy
8. Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Catholic University of Rome, Rome, Italy
9. Respiratory Medicine Section, Policlinico of Bari, Department of Basic Medical Science, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
10. Unit of Allergy and Clinical Immunology, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
11. Department of Experimental and Clinical Medicine, Careggi University Hospital, Florence, Italy
12. Pulmonology Unit, ASL2 Savonese, Pietra Ligure, Savona, Italy
13. Division of Allergy and Clinical Immunology, "Santa Maria della Speranza" Hospital, Salerno, Italy
14. Postprogram in Allergy and Clinical Immunology, School of Medicine, University of Naples Federico II, Naples, Italy
15. Department of Biomedical and Clinical Sciences "L. Sacco" - Division of Respiratory Diseases, University of Milan, Sacco University Hospital, Milano, Italy
16. Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy