A Multicenter, 4-week Crossover (Total Duration 12 Weeks) to Determine the Impact of QVA149 on Nocturnal Oxygen Levels in Chronic Obstructive Pulmonary Disease (COPD)
Conditions
- Chronic Obstructive Pulmonary Disease
Interventions
- DRUG: QVA149
- DRUG: QVA149 Placebo
Sponsor
Novartis Pharmaceuticals