1Department of Hematology, Oncology, Rheumatology, Immunology and Pulmonology, University of Tübingen, Tübingen, Germany
2Division of Pulmonary and Critical Care, Vanderbilt University, Nashville, TN, USA
3Department of Diseases of the Thorax, Ospedale GB Morgagni, Forlì, Italy
4Interstitial Lung Disease Unit, Royal Brompton Hospital, London, UK
5Department of Pathology, Mayo Clinic, Scottsdale, AZ, USA
6Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
7Pulmonary Division, Wolfson Medical Center and Tel Aviv University, Tel Aviv, Israel
8Department of Radiology, Ospedale GB Morgagni, Forlì, Italy
9Department of Pathology, Ospedale GB Morgagni, Forlì, Italy
10Department of Pathology, S. Maria Nuova Hospital-I.R.C.C.S, Reggio Emilia, Italy
11Department of Pathology, Verona University, Verona, Italy
12Division of Radiology, Department of Clinical Sciences, University of Parma, Parma, Italy
13Assistance Publique-Hôpitaux de Paris, Avicenne University Hospital, Bobigny, France
14Department of Chest Medicine, Erasme University Hospital, Free University of Brussels, Brussels, Belgium
15King’s College Hospital Foundation Trust, London, UK
16Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, and Pulmonary Diseases Unit, Department of Internal Medicine, Azienda Ospedaliero-Universitaria “Ospedali Riuniti”, Ancona, Italy
17Krankenhaus vom Roten Kreuz, Stuttgart, Germany
18Clinic for Pneumology and Allergology, Center of Sleep Medicine and Respiratory Care, Bethanien Hospital, Solingen, Germany
19Department of Pneumology and Critical Care Medicine, Thoraxklinik, Translational Lung Research Center Heidelberg, German Center for Lung Research (DZL), University of Heidelberg, Heidelberg, Germany
20Department of Interventional Pulmonology, Ruhrlandklinik, University Hospital, University Duisburg-Essen, Essen, Germany
21Johns Hopkins University School of Medicine, Baltimore, MD USA
22Bronchoscopy Unit, Respiratory Department, University Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
23Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, El Camino Hospital, Mountain View, CA, USA
24The National Institute for Health Research, Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, and Imperial College, London, UK
25Department of Respiratory Medicine, Academic Medical Center, Amsterdam, The Netherlands
26Department of Respiratory Diseases and Allergology, Aarhus University Hospital, Aarhus, Denmark