A Phase IIIb Study to Evaluate the Efficacy of Umeclidinium/Vilanterol (UMEC/VI) in Subjects With Chronic Obstructive Pulmonary Disease (COPD)
Conditions
- Pulmonary Disease, Chronic Obstructive
Interventions
- DRUG: UMEC/VI
- DRUG: Placebo
Sponsor
GlaxoSmithKline