Change From Baseline in Trough FEV1 at Week 48, Full Analysis Set - Clinic Spirometry (FAS-PFT) 10 minutes prior to test-drug inhalation and at 5, 30 and 60 minutes and 2 and 3 hours after inhalation of study medication [clinicaltrials_resource:0950fd0458bdd6ab993ccfb89dca7287]

Trough Forced Expiratory Volume in 1 second (FEV1)

Change From Baseline in Trough FEV1 at Week 48, Full Analysis Set - Clinic Spirometry (FAS-PFT) 10 minutes prior to test-drug inhalation and at 5, 30 and 60 minutes and 2 and 3 hours after inhalation of study medication [clinicaltrials_resource:0950fd0458bdd6ab993ccfb89dca7287]

Trough Forced Expiratory Volume in 1 second (FEV1)