NCT00005280 Specialized Center of Research in Occupational and Immunologic Lung Disease Status COMPLETED Phase N/A
NCT00005279 Tucson Epidemiology Study of Chronic Obstructive Lung Diseases Status COMPLETED Phase N/A
NCT00000621 Feasibility of Retinoic Acid Treatment in Emphysema (FORTE) Status COMPLETED Phase PHASE2
NCT00000571 Trial of Inspiratory Muscle Rest and Exercise in Chronic Obstructive Lung Disease Status COMPLETED Phase PHASE3
NCT00000565 Clinical Study of Intermittent Positive Pressure Breathing (IPPB) Status COMPLETED Phase PHASE3