1. Department of Medicine National Jewish Health Denver Colorado USA
2. Clinical Research Center National Hospital Organization Kinki‐Chuo Chest Medical Center Sakai City Japan
3. Division of Pulmonary and Critical Care Medicine University of Michigan Ann Arbor Michigan USA
4. Weill Cornell Medicine New York New York USA
5. National Reference Centre for Rare Pulmonary Diseases, Louis Pradel Hospital, Hospices Civils de Lyon Claude Bernard University Lyon 1 Lyon France
6. Center for Interstitial and Rare Lung Diseases, Department of Pneumology, Ruhrlandklinik University Hospital University of Duisburg‐Essen Essen Germany
7. Center for Rare Lung Disease Azienda Ospedaliero‐Universitaria Policlinico di Modena Modena Italy
8. Johns Hopkins Medicine Baltimore Maryland USA
9. Department of Respiratory Medicine Competences Centre for Rare Pulmonary Diseases, CHU Rennes, IRSET UMR 1085, Univ Rennes Rennes France
10. Boehringer Ingelheim Pharma GmbH & Co. KG Biberach Germany
11. Boehringer Ingelheim Pharma GmbH Ingelheim am Rhein Germany
12. Boehringer Ingelheim International GmbH Ingelheim am Rhein Germany
13. Boehringer Ingelheim Pharmaceuticals, Inc. Ridgefield Connecticut USA
14. National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, and National Heart and Lung Institute Imperial College London UK