1. Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy
2. President Patients Association Respiriamo Insieme Onlus, Italy
3. Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence - Severe Asthma Unit, Careggi University Hospital, Florence, Italy
4. Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
5. Department of Health Sciences, University of Milan, Milan, and Respiratory Disease Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
6. Immunoallergology Unit, Careggi University Hospital, Florence, Italy
7. Respiratory Unit, Integrated University Hospital, Verona, Italy
8. Department of Respiratory Medicine, University of Ferrara, Ferrara, Italy
9. Section of Health Statistics and Biometry, Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy
10. Department of Health Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
11. Department of Clinical and Biological Sciences, University of Turin, San Luigi Gonzaga University Hospital, Orbassano, Italy
12. Unit of Respiratory Medicine, Department of Experimental Medicine, The University of Rome ‘Tor Vergata’, Rome, Italy
13. Department of Medicine, University of Verona, and Allergy Unit and Asthma Center, Verona University Hospital, Verona, Italy
14. Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
15. Regional Referral Centre for Rare Lung Disease, University Hospital “Policlinico San Marco”, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
16. Department of Biomedical Sciences, Humanitas University, Milan, Italy