1. The Lundquist Institute, 117316, Rehabilitation Clinical Trials Center, Torrance, California, United States;
2. COPD foundation, Miami, Florida, United States
3. Evidera Inc, 387388, Bethesda, Maryland, United States
4. COPD Foundation, 451589, Miami, Florida, United States
5. West Park Healthcare Centre, 27375, Toronto, Ontario, Canada
6. ISGlobal, 310844, Barcelona, Catalunya, Spain
7. Evidera, Bethesda, Maryland, United States
8. Université Laval, Quebéc, Canada
9. Queen's University, Division of Respiratory and Critical Care Medicine, Department of Medicine, Kingston, Ontario, Canada
10. The Lundquist Institute, 117316, Torrance, California, United States
11. Hospital General Gregorio Marañón/ Universidad Complutense, Neumología/Medicina, Madrid, Spain
12. University of Nebraska, Omaha, Nebraska, United States
13. Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Respiratory and Critical Care Physiology and Medicine, Torrance, California, United States
14. University of Pittsburgh, Division of Pulmonary, Allergy & Critical Care Medicine, Pittsburgh, Pennsylvania, United States
15. CIRO+, Horn, Netherlands
16. COPD Foundation, COPD Biomarkers Qualification Consortium, Miami, Florida, United States
17. Boehringer Ingelheim Pharmaceuticals Inc., Clinical Research, Ridgefield, Connecticut, United States
18. University of Tuebingen, Germany
19. Radboudumc, Route 614, Respiratory Diseases, Nijmegen, Netherlands