1. Department of Respiratory Medicine University Hospital of Patras Patras Greece
2. Respiratory Disease Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health University of Padova Padova Italy
3. Department of Pulmonology Ege University Hospital Izmir Turkey
4. Unit of Interstitial Lung Diseases, Department of Respiratory Diseases University Hospitals Leuven Leuven Belgium
5. Department of Clinical and Experimental Medicine, Interventional Pulmonology Unit Careggi University Hospital Florence Florence Italy
6. Center for Rare Lung Diseases, Department of Respiratory Diseases and Allergy Aarhus University Hospital Aarhus Denmark
7. Respiratory Department, Unit of Interstitial Lung Diseases Hospital Universitario de Bellvitge Barcelona Spain
8. 2nd Pulmonary Medicine Department ‘ATTIKON’ University Hospital, Athens Medical School, National and Kapodistrian University of Athens Athens Greece
9. Center for Interstitial and Rare Lung Diseases, Pneumonology Department Ruhrlandklinik University Hospital, University of Duisburg‐Essen Essen Germany
10. Center for Interstitial and Rare Lung Diseases, Department of Pneumology Thoraxklinik—University Clinic Heidelberg and German Center for Lung Research Heidelberg Germany
11. 7th Department of Respiratory Medicine Hospital for Thoracic Diseases, ‘SOTIRIA’ Athens Greece
12. Thoracic Diseases Department Morgagni Pierantoni Hospital Forlì Italy
13. Department of Respiratory Medicine, Medical School University of Thessaly Larissa Greece
14. Respiratory Medicine Department Corfu General Hospital Corfu Greece
15. Pulmonary Clinic NHS General Hospital ‘G. Papanikolaou’ Thessaloniki Greece
16. Pulmonary Department ‘G Papanikolaou’ General Hospital Thessaloniki Greece
17. Aristotle University of Thessaloniki Medical School Thessaloniki Greece
18. First Academic Department of Pneumonology Hospital for Thoracic Diseases, ‘SOTIRIA’, Medical School, National and Kapodistrian University of Athens Athens Greece
19. Department of Thoracic Medicine, Laboratory of Molecular and Cellular Pneumonology Medical School, University of Crete Crete Greece
20. Interstitial Lung Disease Unit, Ιmperial College London Royal Brompton and Harefield London UK