An Efficacy and Safety Study to Compare Three Doses of BEA 2180 BR to Tiotropium and Placebo in the Respimat Inhaler.
Conditions
- Pulmonary Disease, Chronic Obstructive
Interventions
- DRUG: BEA 2180 BR
- DRUG: Tiotropium Bromide
- DRUG: Placebo
Sponsor
Boehringer Ingelheim