University of Milan - Respiratory Unit, Department of Health Sciences, Università degli Studi di Milano, Respiratory Unit, ASST Santi Paolo e Carlo, San Paolo Hospital, Department of Health Sciences, Università degli Studi di Milano, School of Medicine and Surgery, University of Milano Bicocca, Respiratory Unit, San Gerardo Hospital, ASST Monza, School of Medicine and Surgery, University of Milano Bicocca, Respiratory Unit, San Gerardo Hospital, ASST Monza, School of Medicine and Surgery, University of Milano Bicocca, Respiratory Unit, San Gerardo Hospital, ASST Monza, University of Milano-Bicocca - S. Gerardo Hospital - Respiratory Unit, ASST Lodi, UOC Medicina Interna, SST Lodi, UOC Pneumologia, ASST Lodi, UOC Pneumologia, Respiratory Unit, Papa Giovanni XXIII Hospital, Department of Health Sciences, Università degli Studi di Milano, Respiratory Unit, Papa Giovanni XXIII Hospital, Papa Giovanni XXIII Hospital, Respiratory DiseasesUnit, Fondazione IRCCS Policlinico San Matteo, Respiratory Diseases Unit, Fondazione IRCCS Policlinico San Matteo, Respiratory Diseases Unit, Fondazione IRCCS Policlinico San Matteo,Department of Internal Medicine and Therapeutics, University of Pavia, Pulmonary Disease Unit, Department of Internal Medicine, Azienda Ospedali Riuniti, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, Polytechnic University of Marche - Department of Biomedical Sciences and Public Health, Pulmonary Disease Unit, Department of Internal Medicine, Azienda Ospedali Riuniti, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, linical Epidemiology and Medical Statistics Unit, Dept of Medical, Surgical and Experimental Medicine, University of Sassari, Department of Health Sciences, Università degli Studi di Milano, Respiratory Unit, ASST Santi Paolo e Carlo, San Paolo Hospital, Department of Health Sciences, Università degli Studi di Milano, Respiratory Unit, ASST Santi Paolo e Carlo, San Paolo Hospital, Department of Health Sciences, Università degli Studi di Milano, Respiratory Unit, ASST Santi Paolo e Carlo, San Paolo Hospital, Department of Health Sciences, Università degli Studi di Milano and Clinical Epidemiology and Medical Statistics Unit, Dept of Medical, Surgical and Experimental Medicine, University of Sassari

University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Biomedical Sciences, University of Catania - Faculty of Medicine, University of Florence - Department of Experimental and Clinical Biomedical Sciences, University of Florence - Department of Statistics, Computer Science, Applications, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Medicine, NHS Foundation Trust, Royal Free Hospital, University of Milano-Bicocca - School of Medicine and Surgery, University Hospital of Cattinara - Department of Pulmonology, - Department of Translational Medical Sciences, - Department of Translational Medical Sciences, Università Vita-Salute San Raffaele - IRCCS San Raffaele Scientific Institute, Università Vita-Salute San Raffaele - Department of Anesthesia and Intensive Care, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Medicine, Careggi University Hospital - Department of Clinical and Experimental Medicine, Respiratory Diseases Unit, “San Giuseppe”, University of Florence - Azienda Ospedaliero Universitaria Careggi, University of Florence - Azienda Ospedaliero Universitaria Careggi, Sant’Andrea Hospital, University of Catania - Faculty of Medicine, Rugani Hospital - Radiology Unit, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Department of Experimental and Clinical Medicine, APHP Hospital Cochin, Careggi University Hospital of Florence - Infectious and Tropical Diseases Unit, University of Trieste - Cattinara Hospital, Università Vita-Salute San Raffaele - IRCCS San Raffaele Scientific Institute, Università Vita-Salute San Raffaele - IRCCS San Raffaele Scientific Institute, - Department of Translational Medical Sciences, IRCCS - Ospedale San Giuseppe MultiMedica - U.O. di Pneumologia, University of Michigan at Ann Arbor - Michigan Scleroderma Program, Nippon Medical School - Department of Allergy and Rheumatology, Università La Sapienza, University of Florence - Department of Experimental and Clinical Medicine, University of Florence - Azienda Ospedaliero Universitaria Careggi, Ca' Foncello General Hospital - Department of Radiology, University of Milano-Bicocca - S. Gerardo Hospital - Respiratory Unit, University of Catania - Faculty of Medicine, University of Florence - Department of Experimental and Clinical Biomedical Sciences and University of Florence - Department of Experimental and Clinical Medicine