NCT03073798: The Effectiveness of Roflumilast in Improving Mucociliary Clearance in Patients With COPD and Chronic Bronchitis |
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| Completed | 4 | 12 | NA | Roflumilast, Daliresp, Placebo, Sugar Pill | Johns Hopkins University | COPD, Chronic Bronchitis, Emphysema | 05/15 | 05/15 | | |
