The primary efficacy endpoint is defined as area under the curve of change in FEV1 from baseline for the time period from pre-dose to 2 hours post dose (AUC0 2hFEV1) after 12 weeks of randomised treatment. week 12 [clinicaltrials_resource:6ac0c2c0391a8dfb2a9d2fd27eb2b429]

The primary efficacy endpoint is defined as area under the curve of change in FEV1 from baseline for the time period from pre-dose to 2 hours post dose (AUC0 2hFEV1) after 12 weeks of randomised treatment. week 12 [clinicaltrials_resource:6ac0c2c0391a8dfb2a9d2fd27eb2b429]