1. Division of Pulmonary and Critical Care Medicine and
2. Cathedra Salut Respiratoria, University of Barcelona, Barcelona, Spain;
3. Pulmonary Service, Respiratory Institute, Clinic Barcelona, Barcelona, Spain;
4. Fundació Clinic, Institut d’Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain;
5. Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, Barcelona, Spain;
6. Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama;
7. Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania;
8. Section of Respiratory Medicine, University of Ferrara, Ferrara, Italy;
9. Respiratory Medicine, University of Exeter Medical School, Exeter, United Kingdom;
10. Department of Radiology, National Jewish Health, Denver, Colorado;
11. Department of Medicine, University of Kentucky, Lexington, Kentucky;
12. Neumología, Hospital Universitari Vall d’Hebron/Vall d’Hebron Institut de Recerca, Barcelona, Spain;
13. Centre for Heart Lung Innovation, St. Paul’s Hospital and University of British Columbia, Vancouver, British Columbia, Canada;
14. Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada;
15. Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
16. Department of Radiology, University of Michigan, Ann Arbor, Michigan;