| Recruiting | 4 | 1250 | US | Roflumilast, Daliresp, Azithromycin, Zithromax | Johns Hopkins University, Patient-Centered Outcomes Research Institute, University of Illinois at Chicago | Chronic Obstructive Pulmonary Disease Severe, Chronic Bronchitis | 03/26 | 05/26 | | |
NCT04543461: American Lung Association (ALA) Lung Health Cohort |
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| Recruiting | N/A | 4000 | US | | Johns Hopkins University, National Heart, Lung, and Blood Institute (NHLBI), American Lung Association, Stanford University | Lung Diseases | 09/26 | 09/26 | | |